/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 16:57:42,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 16:57:42,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 16:57:42,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 16:57:42,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 16:57:42,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 16:57:42,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 16:57:42,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 16:57:42,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 16:57:42,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 16:57:42,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 16:57:42,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 16:57:42,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 16:57:42,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 16:57:42,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 16:57:42,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 16:57:42,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 16:57:42,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 16:57:42,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 16:57:42,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 16:57:42,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 16:57:42,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 16:57:42,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 16:57:42,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 16:57:42,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 16:57:42,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 16:57:42,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 16:57:42,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 16:57:42,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 16:57:42,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 16:57:42,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 16:57:42,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 16:57:42,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 16:57:42,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 16:57:42,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 16:57:42,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 16:57:42,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 16:57:42,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 16:57:42,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 16:57:42,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 16:57:42,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 16:57:42,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 16:57:42,406 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 16:57:42,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 16:57:42,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 16:57:42,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 16:57:42,412 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 16:57:42,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 16:57:42,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 16:57:42,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 16:57:42,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 16:57:42,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 16:57:42,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 16:57:42,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 16:57:42,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 16:57:42,415 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 16:57:42,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 16:57:42,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 16:57:42,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 16:57:42,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 16:57:42,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 16:57:42,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 16:57:42,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 16:57:42,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 16:57:42,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 16:57:42,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 16:57:42,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 16:57:42,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 16:57:42,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 16:57:42,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 16:57:42,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 16:57:42,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 16:57:42,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 16:57:42,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 16:57:42,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 16:57:42,892 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 16:57:42,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2021-02-19 16:57:42,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778678b79/f1abbf6740e340cdb129711b930188a3/FLAG5d8a31078 [2021-02-19 16:57:43,722 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 16:57:43,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2021-02-19 16:57:43,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778678b79/f1abbf6740e340cdb129711b930188a3/FLAG5d8a31078 [2021-02-19 16:57:44,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778678b79/f1abbf6740e340cdb129711b930188a3 [2021-02-19 16:57:44,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 16:57:44,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 16:57:44,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 16:57:44,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 16:57:44,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 16:57:44,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28874de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44, skipping insertion in model container [2021-02-19 16:57:44,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 16:57:44,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 16:57:44,390 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c[10968,10981] [2021-02-19 16:57:44,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 16:57:44,462 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 16:57:44,531 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c[10968,10981] [2021-02-19 16:57:44,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 16:57:44,602 INFO L208 MainTranslator]: Completed translation [2021-02-19 16:57:44,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44 WrapperNode [2021-02-19 16:57:44,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 16:57:44,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 16:57:44,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 16:57:44,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 16:57:44,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (1/1) ... [2021-02-19 16:57:44,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 16:57:44,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 16:57:44,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 16:57:44,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 16:57:44,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-19 16:57:44,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 16:57:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 16:57:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-19 16:57:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 16:57:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-19 16:57:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-19 16:57:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-19 16:57:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-19 16:57:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-19 16:57:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-19 16:57:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-19 16:57:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-19 16:57:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-19 16:57:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-19 16:57:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-19 16:57:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-19 16:57:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-19 16:57:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-19 16:57:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-19 16:57:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-19 16:57:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-19 16:57:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-19 16:57:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-19 16:57:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-19 16:57:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-19 16:57:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-19 16:57:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-19 16:57:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-19 16:57:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-19 16:57:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 16:57:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-19 16:57:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-19 16:57:44,866 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-19 16:57:44,866 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-19 16:57:44,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-19 16:57:44,866 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-19 16:57:44,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-19 16:57:44,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-19 16:57:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 16:57:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 16:57:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 16:57:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 16:57:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 16:57:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-19 16:57:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 16:57:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-19 16:57:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-19 16:57:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 16:57:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-19 16:57:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 16:57:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-19 16:57:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-19 16:57:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 16:57:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-19 16:57:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-19 16:57:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 16:57:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-19 16:57:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-19 16:57:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-19 16:57:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-19 16:57:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-19 16:57:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-19 16:57:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-19 16:57:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-19 16:57:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-19 16:57:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-19 16:57:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-19 16:57:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-19 16:57:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-19 16:57:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-19 16:57:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-19 16:57:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-19 16:57:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-19 16:57:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-19 16:57:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-19 16:57:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-19 16:57:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-19 16:57:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-19 16:57:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-19 16:57:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-19 16:57:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-19 16:57:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-19 16:57:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-19 16:57:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-19 16:57:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-19 16:57:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 16:57:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-19 16:57:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 16:57:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 16:57:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 16:57:46,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 16:57:46,049 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-19 16:57:46,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 04:57:46 BoogieIcfgContainer [2021-02-19 16:57:46,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 16:57:46,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 16:57:46,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 16:57:46,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 16:57:46,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 04:57:44" (1/3) ... [2021-02-19 16:57:46,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49474717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 04:57:46, skipping insertion in model container [2021-02-19 16:57:46,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 04:57:44" (2/3) ... [2021-02-19 16:57:46,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49474717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 04:57:46, skipping insertion in model container [2021-02-19 16:57:46,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 04:57:46" (3/3) ... [2021-02-19 16:57:46,061 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2021-02-19 16:57:46,069 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 16:57:46,075 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 16:57:46,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 16:57:46,127 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 16:57:46,128 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 16:57:46,128 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 16:57:46,128 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 16:57:46,128 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 16:57:46,129 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 16:57:46,129 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 16:57:46,129 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 16:57:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2021-02-19 16:57:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 16:57:46,163 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:57:46,164 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] [2021-02-19 16:57:46,164 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:57:46,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:57:46,171 INFO L82 PathProgramCache]: Analyzing trace with hash -2081537465, now seen corresponding path program 1 times [2021-02-19 16:57:46,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:57:46,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787040650] [2021-02-19 16:57:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:57:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:46,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:46,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:46,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:46,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:46,925 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:57:46,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:57:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:47,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:47,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:47,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:57:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:47,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:47,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:57:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:47,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:47,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:47,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:57:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:47,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:47,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:47,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:57:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:47,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:47,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-19 16:57:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:47,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:47,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:47,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-19 16:57:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:47,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:47,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:57:47,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787040650] [2021-02-19 16:57:47,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:57:47,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 16:57:47,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749222483] [2021-02-19 16:57:47,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 16:57:47,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:57:47,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 16:57:47,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 16:57:47,140 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2021-02-19 16:57:48,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:57:48,279 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2021-02-19 16:57:48,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 16:57:48,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2021-02-19 16:57:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:57:48,295 INFO L225 Difference]: With dead ends: 249 [2021-02-19 16:57:48,295 INFO L226 Difference]: Without dead ends: 135 [2021-02-19 16:57:48,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 16:57:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-19 16:57:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2021-02-19 16:57:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-02-19 16:57:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2021-02-19 16:57:48,393 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2021-02-19 16:57:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:57:48,394 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2021-02-19 16:57:48,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 16:57:48,394 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2021-02-19 16:57:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-19 16:57:48,397 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:57:48,398 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] [2021-02-19 16:57:48,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 16:57:48,398 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:57:48,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:57:48,399 INFO L82 PathProgramCache]: Analyzing trace with hash -891111323, now seen corresponding path program 1 times [2021-02-19 16:57:48,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:57:48,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081596686] [2021-02-19 16:57:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:57:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:48,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:48,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,906 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:57:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:57:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:48,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:57:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:48,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:57:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:48,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:57:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:48,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:57:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:48,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-19 16:57:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:48,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-19 16:57:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:48,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:48,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:57:48,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081596686] [2021-02-19 16:57:48,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:57:48,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 16:57:48,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666850354] [2021-02-19 16:57:48,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 16:57:48,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:57:48,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 16:57:48,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 16:57:48,965 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2021-02-19 16:57:49,517 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:57:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:57:50,263 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2021-02-19 16:57:50,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 16:57:50,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2021-02-19 16:57:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:57:50,266 INFO L225 Difference]: With dead ends: 182 [2021-02-19 16:57:50,266 INFO L226 Difference]: Without dead ends: 119 [2021-02-19 16:57:50,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 16:57:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-19 16:57:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2021-02-19 16:57:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-19 16:57:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-02-19 16:57:50,309 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2021-02-19 16:57:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:57:50,310 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-02-19 16:57:50,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 16:57:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-02-19 16:57:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-19 16:57:50,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:57:50,312 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] [2021-02-19 16:57:50,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 16:57:50,313 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:57:50,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:57:50,313 INFO L82 PathProgramCache]: Analyzing trace with hash 605758790, now seen corresponding path program 1 times [2021-02-19 16:57:50,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:57:50,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329984582] [2021-02-19 16:57:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:57:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:50,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:50,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:50,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:50,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 16:57:50,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:50,850 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:57:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:57:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:50,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 16:57:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:57:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:50,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:50,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:57:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:50,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:57:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:50,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:50,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:57:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:50,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:50,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-19 16:57:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:50,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-19 16:57:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:50,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:50,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:57:50,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329984582] [2021-02-19 16:57:50,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:57:50,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 16:57:50,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969127231] [2021-02-19 16:57:50,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 16:57:50,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:57:50,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 16:57:50,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-19 16:57:50,940 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2021-02-19 16:57:51,392 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 16:57:51,822 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:57:52,184 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:57:52,544 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:57:53,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:57:53,592 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2021-02-19 16:57:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 16:57:53,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2021-02-19 16:57:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:57:53,596 INFO L225 Difference]: With dead ends: 191 [2021-02-19 16:57:53,596 INFO L226 Difference]: Without dead ends: 119 [2021-02-19 16:57:53,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-19 16:57:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-19 16:57:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2021-02-19 16:57:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-19 16:57:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2021-02-19 16:57:53,639 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2021-02-19 16:57:53,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:57:53,639 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2021-02-19 16:57:53,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 16:57:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2021-02-19 16:57:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-19 16:57:53,641 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:57:53,641 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] [2021-02-19 16:57:53,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 16:57:53,642 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:57:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:57:53,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1880491057, now seen corresponding path program 1 times [2021-02-19 16:57:53,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:57:53,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757367719] [2021-02-19 16:57:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:57:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:53,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:53,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:53,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:53,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:53,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:53,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:53,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:53,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:53,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:53,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:53,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:53,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:54,031 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:57:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:57:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:57:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:57:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:57:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:57:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-19 16:57:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:54,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 16:57:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 16:57:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-19 16:57:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-19 16:57:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:54,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:54,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:57:54,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757367719] [2021-02-19 16:57:54,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:57:54,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 16:57:54,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869487306] [2021-02-19 16:57:54,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 16:57:54,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:57:54,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 16:57:54,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-19 16:57:54,162 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2021-02-19 16:57:54,644 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 16:57:55,975 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:57:56,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:57:56,460 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2021-02-19 16:57:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 16:57:56,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2021-02-19 16:57:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:57:56,465 INFO L225 Difference]: With dead ends: 274 [2021-02-19 16:57:56,465 INFO L226 Difference]: Without dead ends: 202 [2021-02-19 16:57:56,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-19 16:57:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-02-19 16:57:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2021-02-19 16:57:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2021-02-19 16:57:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2021-02-19 16:57:56,516 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2021-02-19 16:57:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:57:56,517 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2021-02-19 16:57:56,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 16:57:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2021-02-19 16:57:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-02-19 16:57:56,519 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:57:56,519 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] [2021-02-19 16:57:56,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 16:57:56,520 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:57:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:57:56,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2105560007, now seen corresponding path program 1 times [2021-02-19 16:57:56,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:57:56,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584220465] [2021-02-19 16:57:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:57:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:56,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:56,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:56,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:56,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:56,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:56,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,908 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:57:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:57:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:57:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:57:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:57:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:57:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-19 16:57:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 16:57:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 16:57:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 16:57:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:56,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-19 16:57:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:57:56,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-19 16:57:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:57:56,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:57:56,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:57:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:57:57,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584220465] [2021-02-19 16:57:57,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:57:57,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 16:57:57,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464662587] [2021-02-19 16:57:57,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 16:57:57,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:57:57,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 16:57:57,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-19 16:57:57,014 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 8 states. [2021-02-19 16:57:57,576 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 16:57:58,761 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:57:59,175 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:57:59,531 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:57:59,882 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 16:58:00,304 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:58:01,137 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2021-02-19 16:58:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-19 16:58:01,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2021-02-19 16:58:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:58:01,152 INFO L225 Difference]: With dead ends: 478 [2021-02-19 16:58:01,152 INFO L226 Difference]: Without dead ends: 341 [2021-02-19 16:58:01,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-02-19 16:58:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-02-19 16:58:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 277. [2021-02-19 16:58:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2021-02-19 16:58:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 320 transitions. [2021-02-19 16:58:01,249 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 320 transitions. Word has length 73 [2021-02-19 16:58:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:58:01,249 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 320 transitions. [2021-02-19 16:58:01,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 16:58:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 320 transitions. [2021-02-19 16:58:01,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-19 16:58:01,252 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:58:01,252 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] [2021-02-19 16:58:01,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 16:58:01,252 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:58:01,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:58:01,253 INFO L82 PathProgramCache]: Analyzing trace with hash -700128259, now seen corresponding path program 1 times [2021-02-19 16:58:01,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:58:01,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108242822] [2021-02-19 16:58:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:58:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,643 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:58:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:58:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:58:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:58:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:58:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:58:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-19 16:58:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-19 16:58:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 16:58:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 16:58:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 16:58:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-19 16:58:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-19 16:58:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:01,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:01,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:58:01,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108242822] [2021-02-19 16:58:01,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:58:01,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 16:58:01,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845413050] [2021-02-19 16:58:01,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 16:58:01,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:58:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 16:58:01,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-19 16:58:01,806 INFO L87 Difference]: Start difference. First operand 277 states and 320 transitions. Second operand 9 states. [2021-02-19 16:58:02,405 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 16:58:03,645 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:58:04,006 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 16:58:04,403 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:58:04,782 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:58:05,154 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:58:06,009 INFO L93 Difference]: Finished difference Result 380 states and 484 transitions. [2021-02-19 16:58:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-19 16:58:06,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2021-02-19 16:58:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:58:06,014 INFO L225 Difference]: With dead ends: 380 [2021-02-19 16:58:06,014 INFO L226 Difference]: Without dead ends: 377 [2021-02-19 16:58:06,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-02-19 16:58:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-02-19 16:58:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2021-02-19 16:58:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2021-02-19 16:58:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 319 transitions. [2021-02-19 16:58:06,109 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 319 transitions. Word has length 77 [2021-02-19 16:58:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:58:06,109 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 319 transitions. [2021-02-19 16:58:06,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-19 16:58:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 319 transitions. [2021-02-19 16:58:06,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-19 16:58:06,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:58:06,113 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] [2021-02-19 16:58:06,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-19 16:58:06,114 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:58:06,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:58:06,114 INFO L82 PathProgramCache]: Analyzing trace with hash 129198161, now seen corresponding path program 1 times [2021-02-19 16:58:06,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:58:06,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63277220] [2021-02-19 16:58:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:58:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,482 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:58:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:58:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:58:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:58:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:58:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:58:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-19 16:58:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-19 16:58:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:06,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:06,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 16:58:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 16:58:06,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 16:58:06,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 16:58:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 16:58:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-19 16:58:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-19 16:58:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:06,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:06,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:58:06,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63277220] [2021-02-19 16:58:06,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:58:06,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 16:58:06,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792653871] [2021-02-19 16:58:06,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 16:58:06,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:58:06,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 16:58:06,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-19 16:58:06,626 INFO L87 Difference]: Start difference. First operand 277 states and 319 transitions. Second operand 9 states. [2021-02-19 16:58:07,702 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 16:58:08,080 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 16:58:08,445 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:08,795 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:09,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:58:09,700 INFO L93 Difference]: Finished difference Result 634 states and 793 transitions. [2021-02-19 16:58:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 16:58:09,701 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2021-02-19 16:58:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:58:09,704 INFO L225 Difference]: With dead ends: 634 [2021-02-19 16:58:09,705 INFO L226 Difference]: Without dead ends: 381 [2021-02-19 16:58:09,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-02-19 16:58:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-02-19 16:58:09,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 287. [2021-02-19 16:58:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-02-19 16:58:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 329 transitions. [2021-02-19 16:58:09,792 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 329 transitions. Word has length 78 [2021-02-19 16:58:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:58:09,793 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 329 transitions. [2021-02-19 16:58:09,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-19 16:58:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 329 transitions. [2021-02-19 16:58:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-19 16:58:09,794 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:58:09,794 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] [2021-02-19 16:58:09,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-19 16:58:09,795 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:58:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:58:09,795 INFO L82 PathProgramCache]: Analyzing trace with hash -380274929, now seen corresponding path program 1 times [2021-02-19 16:58:09,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:58:09,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442135530] [2021-02-19 16:58:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:58:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:09,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:09,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:09,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:09,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:09,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:09,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:09,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:09,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:09,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:09,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,145 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:58:10,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:58:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:58:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:58:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:58:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:58:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-19 16:58:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-19 16:58:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 16:58:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:10,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:10,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 16:58:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 16:58:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-19 16:58:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-19 16:58:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:10,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:10,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:58:10,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442135530] [2021-02-19 16:58:10,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:58:10,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-19 16:58:10,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676385545] [2021-02-19 16:58:10,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-19 16:58:10,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:58:10,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-19 16:58:10,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-02-19 16:58:10,308 INFO L87 Difference]: Start difference. First operand 287 states and 329 transitions. Second operand 11 states. [2021-02-19 16:58:10,968 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:11,335 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:11,718 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:12,441 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:12,854 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:13,212 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 16:58:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:58:14,189 INFO L93 Difference]: Finished difference Result 658 states and 831 transitions. [2021-02-19 16:58:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-19 16:58:14,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2021-02-19 16:58:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:58:14,193 INFO L225 Difference]: With dead ends: 658 [2021-02-19 16:58:14,193 INFO L226 Difference]: Without dead ends: 395 [2021-02-19 16:58:14,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-02-19 16:58:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-19 16:58:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 295. [2021-02-19 16:58:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2021-02-19 16:58:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2021-02-19 16:58:14,265 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 78 [2021-02-19 16:58:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:58:14,265 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2021-02-19 16:58:14,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-19 16:58:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2021-02-19 16:58:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-19 16:58:14,267 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:58:14,267 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] [2021-02-19 16:58:14,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-19 16:58:14,267 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:58:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:58:14,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1904588526, now seen corresponding path program 1 times [2021-02-19 16:58:14,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:58:14,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067168882] [2021-02-19 16:58:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:58:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:14,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:14,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:14,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:14,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 16:58:14,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,620 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 16:58:14,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 16:58:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 16:58:14,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 16:58:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 16:58:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 16:58:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 16:58:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-19 16:58:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-19 16:58:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 16:58:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 16:58:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 16:58:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 16:58:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 16:58:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 16:58:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-19 16:58:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-19 16:58:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 16:58:14,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 16:58:14,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 16:58:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 16:58:14,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067168882] [2021-02-19 16:58:14,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 16:58:14,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 16:58:14,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975715860] [2021-02-19 16:58:14,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 16:58:14,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 16:58:14,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 16:58:14,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-19 16:58:14,762 INFO L87 Difference]: Start difference. First operand 295 states and 337 transitions. Second operand 7 states. [2021-02-19 16:58:15,258 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 16:58:15,898 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 16:58:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 16:58:17,786 INFO L93 Difference]: Finished difference Result 941 states and 1221 transitions. [2021-02-19 16:58:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-19 16:58:17,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2021-02-19 16:58:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 16:58:17,792 INFO L225 Difference]: With dead ends: 941 [2021-02-19 16:58:17,792 INFO L226 Difference]: Without dead ends: 670 [2021-02-19 16:58:17,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-02-19 16:58:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-02-19 16:58:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 571. [2021-02-19 16:58:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-02-19 16:58:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 679 transitions. [2021-02-19 16:58:17,964 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 679 transitions. Word has length 78 [2021-02-19 16:58:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 16:58:17,965 INFO L480 AbstractCegarLoop]: Abstraction has 571 states and 679 transitions. [2021-02-19 16:58:17,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 16:58:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 679 transitions. [2021-02-19 16:58:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-19 16:58:17,966 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 16:58:17,967 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] [2021-02-19 16:58:17,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-19 16:58:17,967 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 16:58:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 16:58:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1566381176, now seen corresponding path program 1 times [2021-02-19 16:58:17,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 16:58:17,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884233641] [2021-02-19 16:58:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 16:58:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 16:58:18,062 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 16:58:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 16:58:18,139 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 16:58:18,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 16:58:18,259 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 16:58:18,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-19 16:58:18,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 04:58:18 BoogieIcfgContainer [2021-02-19 16:58:18,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 16:58:18,453 INFO L168 Benchmark]: Toolchain (without parser) took 34412.09 ms. Allocated memory was 168.8 MB in the beginning and 451.9 MB in the end (delta: 283.1 MB). Free memory was 143.5 MB in the beginning and 250.1 MB in the end (delta: -106.6 MB). Peak memory consumption was 178.0 MB. Max. memory is 8.0 GB. [2021-02-19 16:58:18,455 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 139.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 16:58:18,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.41 ms. Allocated memory is still 168.8 MB. Free memory was 142.4 MB in the beginning and 122.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-19 16:58:18,456 INFO L168 Benchmark]: Boogie Preprocessor took 108.19 ms. Allocated memory is still 168.8 MB. Free memory was 122.0 MB in the beginning and 118.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-19 16:58:18,456 INFO L168 Benchmark]: RCFGBuilder took 1338.06 ms. Allocated memory is still 168.8 MB. Free memory was 118.2 MB in the beginning and 67.6 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.7 MB. Max. memory is 8.0 GB. [2021-02-19 16:58:18,461 INFO L168 Benchmark]: TraceAbstraction took 32397.75 ms. Allocated memory was 168.8 MB in the beginning and 451.9 MB in the end (delta: 283.1 MB). Free memory was 67.1 MB in the beginning and 250.1 MB in the end (delta: -183.0 MB). Peak memory consumption was 100.1 MB. Max. memory is 8.0 GB. [2021-02-19 16:58:18,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 139.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 543.41 ms. Allocated memory is still 168.8 MB. Free memory was 142.4 MB in the beginning and 122.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.19 ms. Allocated memory is still 168.8 MB. Free memory was 122.0 MB in the beginning and 118.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1338.06 ms. Allocated memory is still 168.8 MB. Free memory was 118.2 MB in the beginning and 67.6 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 32397.75 ms. Allocated memory was 168.8 MB in the beginning and 451.9 MB in the end (delta: 283.1 MB). Free memory was 67.1 MB in the beginning and 250.1 MB in the end (delta: -183.0 MB). Peak memory consumption was 100.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 412]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L685] int cleanupTimeShifts = 4; [L808] int waterLevel = 1; [L809] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=179, \old(head)=166, \old(head)=182, \old(methaneLevelCritical)=148, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L758] int retValue_acc ; [L759] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L763] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L764] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L765] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L676] int retValue_acc ; [L679] retValue_acc = 1 [L680] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L765] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L765] tmp = valid_product() [L767] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L769] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L770] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L752] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L583] int splverifierCounter ; [L584] int tmp ; [L585] int tmp___0 ; [L586] int tmp___1 ; [L587] int tmp___2 ; [L590] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L592] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L594] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L600] tmp = __VERIFIER_nondet_int() [L602] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L604] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L826] COND TRUE waterLevel < 2 [L827] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L610] tmp___0 = __VERIFIER_nondet_int() [L612] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L614] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L838] COND FALSE !(\read(methaneLevelCritical)) [L841] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L614] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L620] tmp___2 = __VERIFIER_nondet_int() [L622] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L635] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L434] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L443] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L463] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L468] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L560] int retValue_acc ; [L561] int tmp ; [L562] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L566] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L888] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L891] COND FALSE !(waterLevel < 2) [L895] retValue_acc = 0 [L896] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L566] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L566] tmp = isHighWaterSensorDry() [L568] COND FALSE !(\read(tmp)) [L571] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L573] retValue_acc = tmp___0 [L574] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L468] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L468] tmp = isHighWaterLevel() [L470] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L472] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L491] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L472] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L443] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L449] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] int tmp ; [L783] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L787] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L847] int retValue_acc ; [L850] retValue_acc = methaneLevelCritical [L851] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L787] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L787] tmp = isMethaneLevelCritical() [L789] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L791] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L791] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L791] tmp___0 = isPumpRunning() [L793] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L795] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L412] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 218 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 838 SDtfs, 1525 SDslu, 811 SDs, 0 SdLazy, 3828 SolverSat, 941 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 574 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 183722 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...