/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:43:05,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:43:05,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:43:05,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:43:05,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:43:05,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:43:05,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:43:05,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:43:05,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:43:05,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:43:05,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:43:05,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:43:05,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:43:05,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:43:05,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:43:05,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:43:05,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:43:05,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:43:05,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:43:05,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:43:05,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:43:05,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:43:05,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:43:05,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:43:05,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:43:05,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:43:05,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:43:05,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:43:05,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:43:05,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:43:05,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:43:05,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:43:05,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:43:05,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:43:05,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:43:05,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:43:05,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:43:05,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:43:05,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:43:05,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:43:05,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:43:05,455 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 21:43:05,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:43:05,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:43:05,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:43:05,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:43:05,482 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:43:05,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:43:05,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:43:05,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:43:05,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:43:05,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:43:05,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:43:05,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:43:05,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:43:05,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:43:05,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:43:05,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:43:05,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:43:05,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:43:05,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:43:05,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:43:05,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:43:05,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:43:05,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:43:05,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:43:05,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:43:05,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:43:05,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:43:05,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:43:05,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:43:05,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:43:05,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:43:05,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:43:05,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:43:05,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:43:05,791 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:43:05,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-18 21:43:05,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33de62eb0/bf3516b4113848c3b937f0504b6dced5/FLAG771c88842 [2020-08-18 21:43:06,412 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:43:06,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-18 21:43:06,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33de62eb0/bf3516b4113848c3b937f0504b6dced5/FLAG771c88842 [2020-08-18 21:43:06,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33de62eb0/bf3516b4113848c3b937f0504b6dced5 [2020-08-18 21:43:06,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:43:06,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:43:06,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:43:06,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:43:06,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:43:06,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:43:06" (1/1) ... [2020-08-18 21:43:06,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12af90c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:06, skipping insertion in model container [2020-08-18 21:43:06,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:43:06" (1/1) ... [2020-08-18 21:43:06,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:43:06,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:43:07,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:43:07,128 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:43:07,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:43:07,295 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:43:07,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07 WrapperNode [2020-08-18 21:43:07,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:43:07,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:43:07,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:43:07,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:43:07,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (1/1) ... [2020-08-18 21:43:07,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (1/1) ... [2020-08-18 21:43:07,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (1/1) ... [2020-08-18 21:43:07,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (1/1) ... [2020-08-18 21:43:07,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (1/1) ... [2020-08-18 21:43:07,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (1/1) ... [2020-08-18 21:43:07,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (1/1) ... [2020-08-18 21:43:07,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:43:07,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:43:07,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:43:07,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:43:07,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (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 21:43:07,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:43:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:43:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:43:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 21:43:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 21:43:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:43:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:43:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:43:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:43:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:43:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:43:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:43:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:43:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:43:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 21:43:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:43:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:43:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:43:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:43:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:43:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:43:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:43:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:43:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:43:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:43:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:43:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:43:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:43:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:43:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:43:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:43:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:43:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:43:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:43:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:43:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:43:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:43:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:43:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:43:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:43:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:43:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:43:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:43:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:43:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:43:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 21:43:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 21:43:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:43:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:43:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:43:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:43:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:43:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:43:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:43:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:43:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:43:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:43:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:43:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:43:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:43:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:43:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:43:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:43:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:43:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:43:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:43:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:43:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:43:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:43:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:43:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:43:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:43:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:43:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:43:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 21:43:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:43:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:43:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:43:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:43:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:43:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:43:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:43:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:43:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:43:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:43:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:43:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:43:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:43:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:43:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:43:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:43:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:43:08,662 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:43:08,662 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:43:08,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:43:08 BoogieIcfgContainer [2020-08-18 21:43:08,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:43:08,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:43:08,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:43:08,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:43:08,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:43:06" (1/3) ... [2020-08-18 21:43:08,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4d3251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:43:08, skipping insertion in model container [2020-08-18 21:43:08,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:07" (2/3) ... [2020-08-18 21:43:08,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4d3251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:43:08, skipping insertion in model container [2020-08-18 21:43:08,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:43:08" (3/3) ... [2020-08-18 21:43:08,677 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-08-18 21:43:08,688 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:43:08,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:43:08,711 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:43:08,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:43:08,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:43:08,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:43:08,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:43:08,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:43:08,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:43:08,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:43:08,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:43:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-18 21:43:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 21:43:08,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:08,773 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 21:43:08,774 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1966863296, now seen corresponding path program 1 times [2020-08-18 21:43:08,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:08,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860611603] [2020-08-18 21:43:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,507 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:09,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:43:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 21:43:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:09,629 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 21:43:09,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860611603] [2020-08-18 21:43:09,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:09,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:43:09,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269857886] [2020-08-18 21:43:09,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:43:09,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:09,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:43:09,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:43:09,662 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-18 21:43:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:10,578 INFO L93 Difference]: Finished difference Result 274 states and 358 transitions. [2020-08-18 21:43:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:43:10,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 21:43:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:10,611 INFO L225 Difference]: With dead ends: 274 [2020-08-18 21:43:10,611 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 21:43:10,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:43:10,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 21:43:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 122. [2020-08-18 21:43:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 21:43:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2020-08-18 21:43:10,772 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 51 [2020-08-18 21:43:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:10,773 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2020-08-18 21:43:10,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:43:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2020-08-18 21:43:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 21:43:10,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:10,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:10,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:43:10,777 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 335710898, now seen corresponding path program 1 times [2020-08-18 21:43:10,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:10,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207991328] [2020-08-18 21:43:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,105 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:11,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:43:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:43:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:11,194 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 21:43:11,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207991328] [2020-08-18 21:43:11,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:11,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:43:11,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190860494] [2020-08-18 21:43:11,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:43:11,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:11,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:43:11,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:43:11,200 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 5 states. [2020-08-18 21:43:11,698 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:12,489 INFO L93 Difference]: Finished difference Result 219 states and 269 transitions. [2020-08-18 21:43:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:43:12,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 21:43:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:12,497 INFO L225 Difference]: With dead ends: 219 [2020-08-18 21:43:12,497 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 21:43:12,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:43:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 21:43:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-18 21:43:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 21:43:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-08-18 21:43:12,534 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 52 [2020-08-18 21:43:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:12,534 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-08-18 21:43:12,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:43:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-08-18 21:43:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 21:43:12,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:12,537 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] [2020-08-18 21:43:12,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:43:12,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:12,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:12,538 INFO L82 PathProgramCache]: Analyzing trace with hash 727255979, now seen corresponding path program 1 times [2020-08-18 21:43:12,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:12,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027868265] [2020-08-18 21:43:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,867 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:43:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:43:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:12,957 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 21:43:12,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027868265] [2020-08-18 21:43:12,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:12,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:43:12,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771549181] [2020-08-18 21:43:12,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:43:12,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:12,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:43:12,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:43:12,960 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 9 states. [2020-08-18 21:43:13,341 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:13,662 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:13,918 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:14,198 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:15,286 INFO L93 Difference]: Finished difference Result 228 states and 284 transitions. [2020-08-18 21:43:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:43:15,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 21:43:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:15,294 INFO L225 Difference]: With dead ends: 228 [2020-08-18 21:43:15,294 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 21:43:15,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:43:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 21:43:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-18 21:43:15,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 21:43:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-08-18 21:43:15,337 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 56 [2020-08-18 21:43:15,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:15,339 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-08-18 21:43:15,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:43:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-08-18 21:43:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 21:43:15,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:15,350 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] [2020-08-18 21:43:15,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:43:15,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:15,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1730792410, now seen corresponding path program 1 times [2020-08-18 21:43:15,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:15,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301814908] [2020-08-18 21:43:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,715 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:15,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:43:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 21:43:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:43:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:15,812 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 21:43:15,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301814908] [2020-08-18 21:43:15,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:15,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:43:15,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873701518] [2020-08-18 21:43:15,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:43:15,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:15,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:43:15,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:43:15,815 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 7 states. [2020-08-18 21:43:16,154 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:17,395 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:17,986 INFO L93 Difference]: Finished difference Result 313 states and 394 transitions. [2020-08-18 21:43:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:43:17,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-08-18 21:43:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:17,992 INFO L225 Difference]: With dead ends: 313 [2020-08-18 21:43:17,992 INFO L226 Difference]: Without dead ends: 228 [2020-08-18 21:43:17,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:43:17,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-08-18 21:43:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 182. [2020-08-18 21:43:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 21:43:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2020-08-18 21:43:18,034 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 64 [2020-08-18 21:43:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:18,034 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2020-08-18 21:43:18,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:43:18,035 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2020-08-18 21:43:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 21:43:18,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:18,036 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] [2020-08-18 21:43:18,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:43:18,036 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:18,037 INFO L82 PathProgramCache]: Analyzing trace with hash 529777432, now seen corresponding path program 1 times [2020-08-18 21:43:18,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:18,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803131034] [2020-08-18 21:43:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,293 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:18,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:43:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 21:43:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 21:43:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:18,425 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 21:43:18,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803131034] [2020-08-18 21:43:18,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:18,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:43:18,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902796288] [2020-08-18 21:43:18,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:43:18,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:18,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:43:18,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:43:18,433 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 9 states. [2020-08-18 21:43:18,803 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:19,862 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:20,180 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:20,718 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:20,943 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:21,782 INFO L93 Difference]: Finished difference Result 537 states and 684 transitions. [2020-08-18 21:43:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 21:43:21,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 21:43:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:21,789 INFO L225 Difference]: With dead ends: 537 [2020-08-18 21:43:21,789 INFO L226 Difference]: Without dead ends: 383 [2020-08-18 21:43:21,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:43:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-18 21:43:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 312. [2020-08-18 21:43:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-18 21:43:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2020-08-18 21:43:21,869 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 78 [2020-08-18 21:43:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:21,870 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2020-08-18 21:43:21,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:43:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2020-08-18 21:43:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 21:43:21,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:21,872 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] [2020-08-18 21:43:21,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:43:21,872 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:21,873 INFO L82 PathProgramCache]: Analyzing trace with hash 281843316, now seen corresponding path program 1 times [2020-08-18 21:43:21,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:21,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832297316] [2020-08-18 21:43:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,183 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:43:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 21:43:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 21:43:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,330 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 21:43:22,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832297316] [2020-08-18 21:43:22,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:22,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:43:22,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455794000] [2020-08-18 21:43:22,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:43:22,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:22,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:43:22,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:43:22,333 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand 10 states. [2020-08-18 21:43:22,733 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:23,889 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:24,788 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:25,028 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:25,276 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:25,585 INFO L93 Difference]: Finished difference Result 702 states and 877 transitions. [2020-08-18 21:43:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:43:25,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-08-18 21:43:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:25,591 INFO L225 Difference]: With dead ends: 702 [2020-08-18 21:43:25,591 INFO L226 Difference]: Without dead ends: 418 [2020-08-18 21:43:25,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-18 21:43:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-18 21:43:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 311. [2020-08-18 21:43:25,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-18 21:43:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 359 transitions. [2020-08-18 21:43:25,664 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 359 transitions. Word has length 82 [2020-08-18 21:43:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:25,665 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 359 transitions. [2020-08-18 21:43:25,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:43:25,665 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 359 transitions. [2020-08-18 21:43:25,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 21:43:25,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:25,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:25,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:43:25,667 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:25,668 INFO L82 PathProgramCache]: Analyzing trace with hash 131138833, now seen corresponding path program 1 times [2020-08-18 21:43:25,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:25,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922789094] [2020-08-18 21:43:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:25,919 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:25,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:25,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:25,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:25,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:43:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 21:43:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:43:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:43:26,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922789094] [2020-08-18 21:43:26,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:26,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:43:26,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974482442] [2020-08-18 21:43:26,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:43:26,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:26,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:43:26,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:43:26,119 INFO L87 Difference]: Start difference. First operand 311 states and 359 transitions. Second operand 10 states. [2020-08-18 21:43:27,061 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:27,311 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:43:27,591 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:27,831 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:28,798 INFO L93 Difference]: Finished difference Result 709 states and 905 transitions. [2020-08-18 21:43:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:43:28,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-18 21:43:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:28,804 INFO L225 Difference]: With dead ends: 709 [2020-08-18 21:43:28,804 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 21:43:28,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:43:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 21:43:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 321. [2020-08-18 21:43:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 21:43:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 369 transitions. [2020-08-18 21:43:28,882 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 369 transitions. Word has length 98 [2020-08-18 21:43:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:28,883 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 369 transitions. [2020-08-18 21:43:28,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:43:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 369 transitions. [2020-08-18 21:43:28,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 21:43:28,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:28,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:28,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:43:28,885 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:28,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1918249009, now seen corresponding path program 1 times [2020-08-18 21:43:28,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:28,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013967676] [2020-08-18 21:43:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,172 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:29,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:43:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 21:43:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:43:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:43:29,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013967676] [2020-08-18 21:43:29,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:29,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:43:29,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527684420] [2020-08-18 21:43:29,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:43:29,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:29,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:43:29,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:43:29,312 INFO L87 Difference]: Start difference. First operand 321 states and 369 transitions. Second operand 12 states. [2020-08-18 21:43:30,194 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:30,516 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:30,735 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:31,363 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:31,612 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:31,860 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:32,904 INFO L93 Difference]: Finished difference Result 729 states and 927 transitions. [2020-08-18 21:43:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:43:32,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-08-18 21:43:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:32,909 INFO L225 Difference]: With dead ends: 729 [2020-08-18 21:43:32,909 INFO L226 Difference]: Without dead ends: 436 [2020-08-18 21:43:32,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 21:43:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-08-18 21:43:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 329. [2020-08-18 21:43:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-18 21:43:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2020-08-18 21:43:32,977 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 98 [2020-08-18 21:43:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:32,977 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2020-08-18 21:43:32,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:43:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2020-08-18 21:43:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 21:43:32,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:32,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:32,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:43:32,980 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:32,980 INFO L82 PathProgramCache]: Analyzing trace with hash -948667986, now seen corresponding path program 1 times [2020-08-18 21:43:32,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:32,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141049675] [2020-08-18 21:43:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,236 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:43:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 21:43:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:43:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:43:33,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141049675] [2020-08-18 21:43:33,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:33,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:43:33,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629200936] [2020-08-18 21:43:33,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:43:33,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:33,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:43:33,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:43:33,378 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand 8 states. [2020-08-18 21:43:33,861 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:34,390 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:36,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:36,437 INFO L93 Difference]: Finished difference Result 1028 states and 1346 transitions. [2020-08-18 21:43:36,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 21:43:36,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-18 21:43:36,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:36,448 INFO L225 Difference]: With dead ends: 1028 [2020-08-18 21:43:36,448 INFO L226 Difference]: Without dead ends: 727 [2020-08-18 21:43:36,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-08-18 21:43:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-08-18 21:43:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 595. [2020-08-18 21:43:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-08-18 21:43:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 705 transitions. [2020-08-18 21:43:36,600 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 705 transitions. Word has length 98 [2020-08-18 21:43:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:36,602 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 705 transitions. [2020-08-18 21:43:36,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:43:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 705 transitions. [2020-08-18 21:43:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 21:43:36,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:36,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:36,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:43:36,607 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:36,607 INFO L82 PathProgramCache]: Analyzing trace with hash -944641720, now seen corresponding path program 1 times [2020-08-18 21:43:36,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:36,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995294240] [2020-08-18 21:43:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,874 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:36,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:43:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:43:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:43:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 21:43:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 21:43:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:43:37,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995294240] [2020-08-18 21:43:37,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:43:37,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 21:43:37,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434989853] [2020-08-18 21:43:37,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 21:43:37,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:37,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 21:43:37,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:43:37,223 INFO L87 Difference]: Start difference. First operand 595 states and 705 transitions. Second operand 18 states. [2020-08-18 21:43:38,105 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:38,425 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:38,718 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:38,969 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:39,634 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:40,467 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:40,782 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:41,052 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:41,293 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:41,623 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:41,892 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:42,491 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 21:43:43,031 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 21:43:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:44,586 INFO L93 Difference]: Finished difference Result 1262 states and 1575 transitions. [2020-08-18 21:43:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 21:43:44,587 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-08-18 21:43:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:44,592 INFO L225 Difference]: With dead ends: 1262 [2020-08-18 21:43:44,593 INFO L226 Difference]: Without dead ends: 695 [2020-08-18 21:43:44,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=428, Invalid=1734, Unknown=0, NotChecked=0, Total=2162 [2020-08-18 21:43:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-08-18 21:43:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 572. [2020-08-18 21:43:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-08-18 21:43:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 666 transitions. [2020-08-18 21:43:44,710 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 666 transitions. Word has length 102 [2020-08-18 21:43:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:44,710 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 666 transitions. [2020-08-18 21:43:44,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 21:43:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 666 transitions. [2020-08-18 21:43:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 21:43:44,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:44,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:44,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:43:44,714 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:44,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1654540536, now seen corresponding path program 1 times [2020-08-18 21:43:44,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:44,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017695665] [2020-08-18 21:43:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,986 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:44,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:43:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:43:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:43:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 21:43:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 21:43:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:43:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 21:43:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 21:43:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 21:43:45,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017695665] [2020-08-18 21:43:45,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:43:45,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 21:43:45,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127901883] [2020-08-18 21:43:45,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:43:45,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:45,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:43:45,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:43:45,160 INFO L87 Difference]: Start difference. First operand 572 states and 666 transitions. Second operand 9 states. [2020-08-18 21:43:45,583 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:47,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:47,334 INFO L93 Difference]: Finished difference Result 1091 states and 1387 transitions. [2020-08-18 21:43:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 21:43:47,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-18 21:43:47,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:47,344 INFO L225 Difference]: With dead ends: 1091 [2020-08-18 21:43:47,344 INFO L226 Difference]: Without dead ends: 1088 [2020-08-18 21:43:47,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-08-18 21:43:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-08-18 21:43:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 901. [2020-08-18 21:43:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-08-18 21:43:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1053 transitions. [2020-08-18 21:43:47,553 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1053 transitions. Word has length 137 [2020-08-18 21:43:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:47,554 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1053 transitions. [2020-08-18 21:43:47,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:43:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1053 transitions. [2020-08-18 21:43:47,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-18 21:43:47,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:47,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:47,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:43:47,559 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:47,560 INFO L82 PathProgramCache]: Analyzing trace with hash -402984640, now seen corresponding path program 1 times [2020-08-18 21:43:47,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:47,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882416474] [2020-08-18 21:43:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:43:47,626 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:43:47,627 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:43:47,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:43:47,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:43:47 BoogieIcfgContainer [2020-08-18 21:43:47,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:43:47,665 INFO L168 Benchmark]: Toolchain (without parser) took 41012.58 ms. Allocated memory was 138.9 MB in the beginning and 678.4 MB in the end (delta: 539.5 MB). Free memory was 100.7 MB in the beginning and 563.1 MB in the end (delta: -462.4 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:47,666 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:43:47,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.76 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 171.1 MB in the end (delta: -70.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:47,667 INFO L168 Benchmark]: Boogie Preprocessor took 89.73 ms. Allocated memory is still 202.9 MB. Free memory was 171.1 MB in the beginning and 166.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:47,668 INFO L168 Benchmark]: RCFGBuilder took 1280.01 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 166.2 MB in the beginning and 196.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:47,669 INFO L168 Benchmark]: TraceAbstraction took 38994.37 ms. Allocated memory was 234.9 MB in the beginning and 678.4 MB in the end (delta: 443.5 MB). Free memory was 195.4 MB in the beginning and 563.1 MB in the end (delta: -367.6 MB). Peak memory consumption was 75.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:47,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.76 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 171.1 MB in the end (delta: -70.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.73 ms. Allocated memory is still 202.9 MB. Free memory was 171.1 MB in the beginning and 166.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1280.01 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 166.2 MB in the beginning and 196.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38994.37 ms. Allocated memory was 234.9 MB in the beginning and 678.4 MB in the end (delta: 443.5 MB). Free memory was 195.4 MB in the beginning and 563.1 MB in the end (delta: -367.6 MB). Peak memory consumption was 75.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 830]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L43] int methAndRunningLastTime ; [L251] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L455] int pumpRunning = 0; [L456] int systemActive = 1; [L628] int waterLevel = 1; [L629] int methaneLevelCritical = 0; [L835] int cleanupTimeShifts = 4; [L909] int retValue_acc ; [L910] int tmp ; [L914] FCALL select_helpers() [L915] FCALL select_features() [L916] CALL, EXPR valid_product() [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); [L916] RET, EXPR valid_product() [L916] tmp = valid_product() [L918] COND TRUE \read(tmp) [L920] FCALL setup() [L921] CALL runTest() [L902] CALL __utac_acc__Specification2_spec__1() [L48] methAndRunningLastTime = 0 [L902] RET __utac_acc__Specification2_spec__1() [L903] CALL test() [L724] int splverifierCounter ; [L725] int tmp ; [L726] int tmp___0 ; [L727] int tmp___1 ; [L728] int tmp___2 ; [L731] splverifierCounter = 0 [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND TRUE \read(tmp) [L745] CALL waterRise() [L646] COND TRUE waterLevel < 2 [L647] waterLevel = waterLevel + 1 [L745] RET waterRise() [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND FALSE !(\read(pumpRunning)) [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND TRUE ! pumpRunning [L496] CALL, EXPR isHighWaterLevel() [L606] int retValue_acc ; [L607] int tmp ; [L608] int tmp___0 ; [L612] CALL, EXPR isHighWaterSensorDry() [L708] int retValue_acc ; [L711] COND FALSE !(waterLevel < 2) [L715] retValue_acc = 0 [L716] return (retValue_acc); [L612] RET, EXPR isHighWaterSensorDry() [L612] tmp = isHighWaterSensorDry() [L614] COND FALSE !(\read(tmp)) [L617] tmp___0 = 1 [L619] retValue_acc = tmp___0 [L620] return (retValue_acc); [L496] RET, EXPR isHighWaterLevel() [L496] tmp = isHighWaterLevel() [L498] COND TRUE \read(tmp) [L500] CALL activatePump() [L525] int tmp ; [L529] CALL, EXPR isMethaneAlarm() [L550] int retValue_acc ; [L554] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L554] RET, EXPR isMethaneLevelCritical() [L554] retValue_acc = isMethaneLevelCritical() [L556] return (retValue_acc); [L529] RET, EXPR isMethaneAlarm() [L529] tmp = isMethaneAlarm() [L531] COND FALSE !(\read(tmp)) [L535] CALL activatePump__wrappee__highWaterSensor() [L519] pumpRunning = 1 [L535] RET activatePump__wrappee__highWaterSensor() [L500] RET activatePump() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND FALSE !(\read(tmp)) [L76] methAndRunningLastTime = 0 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp___0) [L755] CALL changeMethaneLevel() [L658] COND FALSE !(\read(methaneLevelCritical)) [L661] methaneLevelCritical = 1 [L755] RET changeMethaneLevel() [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND FALSE !(\read(methAndRunningLastTime)) [L70] methAndRunningLastTime = 1 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND TRUE \read(methAndRunningLastTime) [L67] CALL __automaton_fail() [L830] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.8s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 32.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1268 SDtfs, 3482 SDslu, 1736 SDs, 0 SdLazy, 7420 SolverSat, 2233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 969 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1095 NumberOfCodeBlocks, 1095 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 905 ConstructedInterpolants, 0 QuantifiedInterpolants, 303920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 38/42 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...