/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:54:09,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:54:09,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:54:09,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:54:09,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:54:09,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:54:09,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:54:09,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:54:09,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:54:09,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:54:09,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:54:09,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:54:09,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:54:09,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:54:09,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:54:09,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:54:09,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:54:09,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:54:09,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:54:09,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:54:09,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:54:09,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:54:09,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:54:09,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:54:09,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:54:09,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:54:09,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:54:09,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:54:09,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:54:09,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:54:09,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:54:09,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:54:09,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:54:09,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:54:09,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:54:09,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:54:09,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:54:09,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:54:09,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:54:09,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:54:09,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:54:09,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:54:09,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:54:09,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:54:09,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:54:09,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:54:09,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:54:09,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:54:09,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:54:09,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:54:09,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:54:09,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:54:09,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:54:09,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:54:09,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:54:09,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:54:09,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:54:09,477 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:54:09,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:54:09,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:54:09,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:54:09,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:54:09,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:54:09,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:54:09,479 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:54:09,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:54:09,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:54:09,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:54:09,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:54:09,946 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:54:09,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-10-23 19:54:10,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7987df147/efd7a963cd44468387ba5c941392387d/FLAG0c5dbdca9 [2020-10-23 19:54:10,843 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:54:10,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-10-23 19:54:10,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7987df147/efd7a963cd44468387ba5c941392387d/FLAG0c5dbdca9 [2020-10-23 19:54:11,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7987df147/efd7a963cd44468387ba5c941392387d [2020-10-23 19:54:11,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:54:11,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:54:11,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:11,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:54:11,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:54:11,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ea4a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11, skipping insertion in model container [2020-10-23 19:54:11,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:54:11,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:54:11,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:11,607 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:54:11,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:11,744 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:54:11,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11 WrapperNode [2020-10-23 19:54:11,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:11,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:54:11,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:54:11,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:54:11,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (1/1) ... [2020-10-23 19:54:11,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:54:11,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:54:11,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:54:11,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:54:11,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (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 [2020-10-23 19:54:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:54:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:54:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:54:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:54:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:54:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:54:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:54:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:54:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:54:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:54:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:54:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:54:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:54:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:54:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:54:11,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:54:11,967 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:54:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:54:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:54:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:54:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:54:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:54:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:54:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:54:11,973 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:54:11,977 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:54:11,977 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:54:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:54:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:54:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:54:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:54:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:54:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:54:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:54:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:54:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:54:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:54:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:54:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:54:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:54:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:54:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:54:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:54:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:54:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:54:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:54:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:54:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:54:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:54:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:54:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:54:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:54:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:54:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:54:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:54:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:54:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:54:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:54:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:54:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:54:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:54:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:54:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:54:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:54:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:54:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:54:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:54:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:54:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:54:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:54:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:54:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:54:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:54:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:54:13,398 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:54:13,398 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:54:13,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:13 BoogieIcfgContainer [2020-10-23 19:54:13,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:54:13,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:54:13,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:54:13,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:54:13,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:54:11" (1/3) ... [2020-10-23 19:54:13,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b15c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:13, skipping insertion in model container [2020-10-23 19:54:13,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:11" (2/3) ... [2020-10-23 19:54:13,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b15c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:13, skipping insertion in model container [2020-10-23 19:54:13,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:13" (3/3) ... [2020-10-23 19:54:13,411 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2020-10-23 19:54:13,423 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:54:13,429 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:54:13,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:54:13,474 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:54:13,474 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:54:13,474 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:54:13,474 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:54:13,474 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:54:13,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:54:13,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:54:13,475 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:54:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states. [2020-10-23 19:54:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:54:13,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:13,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:13,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:13,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:13,530 INFO L82 PathProgramCache]: Analyzing trace with hash -699102213, now seen corresponding path program 1 times [2020-10-23 19:54:13,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:13,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006458815] [2020-10-23 19:54:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:13,619 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,402 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:54:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:14,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006458815] [2020-10-23 19:54:14,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:14,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:54:14,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580600637] [2020-10-23 19:54:14,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:54:14,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:14,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:54:14,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:14,613 INFO L87 Difference]: Start difference. First operand 350 states. Second operand 4 states. [2020-10-23 19:54:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:16,665 INFO L93 Difference]: Finished difference Result 554 states and 655 transitions. [2020-10-23 19:54:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:54:16,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:54:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:16,686 INFO L225 Difference]: With dead ends: 554 [2020-10-23 19:54:16,686 INFO L226 Difference]: Without dead ends: 345 [2020-10-23 19:54:16,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-23 19:54:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 296. [2020-10-23 19:54:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-23 19:54:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 324 transitions. [2020-10-23 19:54:16,891 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 324 transitions. Word has length 154 [2020-10-23 19:54:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:16,892 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 324 transitions. [2020-10-23 19:54:16,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:54:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 324 transitions. [2020-10-23 19:54:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:54:16,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:16,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:16,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:54:16,898 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:16,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:16,899 INFO L82 PathProgramCache]: Analyzing trace with hash 462856404, now seen corresponding path program 1 times [2020-10-23 19:54:16,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:16,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174354533] [2020-10-23 19:54:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:16,904 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,435 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:54:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:54:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:17,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174354533] [2020-10-23 19:54:17,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:17,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:54:17,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288561671] [2020-10-23 19:54:17,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:54:17,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:54:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:54:17,603 INFO L87 Difference]: Start difference. First operand 296 states and 324 transitions. Second operand 5 states. [2020-10-23 19:54:18,482 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:20,105 INFO L93 Difference]: Finished difference Result 480 states and 546 transitions. [2020-10-23 19:54:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:54:20,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:54:20,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:20,119 INFO L225 Difference]: With dead ends: 480 [2020-10-23 19:54:20,119 INFO L226 Difference]: Without dead ends: 334 [2020-10-23 19:54:20,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:54:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-23 19:54:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 286. [2020-10-23 19:54:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-23 19:54:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 311 transitions. [2020-10-23 19:54:20,276 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 311 transitions. Word has length 155 [2020-10-23 19:54:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:20,277 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 311 transitions. [2020-10-23 19:54:20,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:54:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 311 transitions. [2020-10-23 19:54:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-23 19:54:20,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:20,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:20,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:54:20,281 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1418062407, now seen corresponding path program 1 times [2020-10-23 19:54:20,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:20,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83902818] [2020-10-23 19:54:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:20,286 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,774 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:20,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:54:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:54:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:21,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83902818] [2020-10-23 19:54:21,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:21,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:54:21,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960358292] [2020-10-23 19:54:21,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:54:21,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:21,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:54:21,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:54:21,071 INFO L87 Difference]: Start difference. First operand 286 states and 311 transitions. Second operand 10 states. [2020-10-23 19:54:21,868 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:22,406 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:22,851 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:23,366 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:23,799 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:24,236 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:26,652 INFO L93 Difference]: Finished difference Result 500 states and 572 transitions. [2020-10-23 19:54:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:54:26,653 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-23 19:54:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:26,658 INFO L225 Difference]: With dead ends: 500 [2020-10-23 19:54:26,658 INFO L226 Difference]: Without dead ends: 334 [2020-10-23 19:54:26,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:54:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-23 19:54:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 286. [2020-10-23 19:54:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-23 19:54:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 310 transitions. [2020-10-23 19:54:26,800 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 310 transitions. Word has length 164 [2020-10-23 19:54:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:26,801 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 310 transitions. [2020-10-23 19:54:26,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:54:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 310 transitions. [2020-10-23 19:54:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-23 19:54:26,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:26,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:26,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:54:26,806 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:26,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:26,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1533806140, now seen corresponding path program 1 times [2020-10-23 19:54:26,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:26,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715158075] [2020-10-23 19:54:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:26,810 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,230 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:54:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 19:54:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 19:54:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:27,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715158075] [2020-10-23 19:54:27,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:27,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:54:27,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786497866] [2020-10-23 19:54:27,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:54:27,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:27,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:54:27,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:54:27,435 INFO L87 Difference]: Start difference. First operand 286 states and 310 transitions. Second operand 7 states. [2020-10-23 19:54:28,213 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:30,283 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:31,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:31,565 INFO L93 Difference]: Finished difference Result 647 states and 748 transitions. [2020-10-23 19:54:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:54:31,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-23 19:54:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:31,570 INFO L225 Difference]: With dead ends: 647 [2020-10-23 19:54:31,570 INFO L226 Difference]: Without dead ends: 481 [2020-10-23 19:54:31,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:54:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-23 19:54:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 408. [2020-10-23 19:54:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-23 19:54:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 441 transitions. [2020-10-23 19:54:31,743 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 441 transitions. Word has length 182 [2020-10-23 19:54:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:31,744 INFO L481 AbstractCegarLoop]: Abstraction has 408 states and 441 transitions. [2020-10-23 19:54:31,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:54:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 441 transitions. [2020-10-23 19:54:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:54:31,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:31,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:31,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:54:31,748 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash 615700977, now seen corresponding path program 1 times [2020-10-23 19:54:31,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:31,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088564049] [2020-10-23 19:54:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:31,753 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,185 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:54:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:54:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:54:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:32,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088564049] [2020-10-23 19:54:32,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:32,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:54:32,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700071206] [2020-10-23 19:54:32,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:54:32,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:32,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:54:32,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:54:32,440 INFO L87 Difference]: Start difference. First operand 408 states and 441 transitions. Second operand 10 states. [2020-10-23 19:54:33,122 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:35,282 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:35,670 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:36,080 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:36,455 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:36,835 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:37,204 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:37,599 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:38,135 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:40,293 INFO L93 Difference]: Finished difference Result 1047 states and 1211 transitions. [2020-10-23 19:54:40,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:54:40,294 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-10-23 19:54:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:40,300 INFO L225 Difference]: With dead ends: 1047 [2020-10-23 19:54:40,301 INFO L226 Difference]: Without dead ends: 759 [2020-10-23 19:54:40,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:54:40,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-23 19:54:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 649. [2020-10-23 19:54:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-10-23 19:54:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 707 transitions. [2020-10-23 19:54:40,673 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 707 transitions. Word has length 206 [2020-10-23 19:54:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:40,674 INFO L481 AbstractCegarLoop]: Abstraction has 649 states and 707 transitions. [2020-10-23 19:54:40,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:54:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 707 transitions. [2020-10-23 19:54:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 19:54:40,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:40,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:40,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:54:40,679 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:40,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1640103498, now seen corresponding path program 1 times [2020-10-23 19:54:40,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:40,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223161012] [2020-10-23 19:54:40,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:40,683 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,167 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:41,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:54:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:54:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:54:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:41,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223161012] [2020-10-23 19:54:41,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:41,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:54:41,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97382035] [2020-10-23 19:54:41,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:54:41,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:41,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:54:41,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:54:41,401 INFO L87 Difference]: Start difference. First operand 649 states and 707 transitions. Second operand 11 states. [2020-10-23 19:54:42,173 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:44,154 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:44,516 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:44,927 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:45,325 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:45,802 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:46,262 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:46,682 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:47,116 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:48,999 INFO L93 Difference]: Finished difference Result 1349 states and 1546 transitions. [2020-10-23 19:54:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 19:54:49,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 211 [2020-10-23 19:54:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:49,007 INFO L225 Difference]: With dead ends: 1349 [2020-10-23 19:54:49,007 INFO L226 Difference]: Without dead ends: 820 [2020-10-23 19:54:49,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-10-23 19:54:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-23 19:54:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 647. [2020-10-23 19:54:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-10-23 19:54:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 703 transitions. [2020-10-23 19:54:49,325 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 703 transitions. Word has length 211 [2020-10-23 19:54:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:49,326 INFO L481 AbstractCegarLoop]: Abstraction has 647 states and 703 transitions. [2020-10-23 19:54:49,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:54:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 703 transitions. [2020-10-23 19:54:49,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 19:54:49,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:49,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:49,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:54:49,330 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:49,331 INFO L82 PathProgramCache]: Analyzing trace with hash 875392546, now seen corresponding path program 1 times [2020-10-23 19:54:49,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:49,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065503942] [2020-10-23 19:54:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:49,335 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,720 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:54:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:54:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 19:54:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:49,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065503942] [2020-10-23 19:54:49,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:49,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:54:49,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713027136] [2020-10-23 19:54:49,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:54:49,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:49,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:54:49,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:54:49,991 INFO L87 Difference]: Start difference. First operand 647 states and 703 transitions. Second operand 11 states. [2020-10-23 19:54:51,560 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:51,978 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:52,406 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:54:52,794 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:53,202 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:53,610 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:55,557 INFO L93 Difference]: Finished difference Result 1357 states and 1562 transitions. [2020-10-23 19:54:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:54:55,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 212 [2020-10-23 19:54:55,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:55,563 INFO L225 Difference]: With dead ends: 1357 [2020-10-23 19:54:55,563 INFO L226 Difference]: Without dead ends: 830 [2020-10-23 19:54:55,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:54:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-10-23 19:54:55,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 663. [2020-10-23 19:54:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-10-23 19:54:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 719 transitions. [2020-10-23 19:54:55,814 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 719 transitions. Word has length 212 [2020-10-23 19:54:55,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:55,815 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 719 transitions. [2020-10-23 19:54:55,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:54:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 719 transitions. [2020-10-23 19:54:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 19:54:55,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:55,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:55,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:54:55,820 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:55,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:55,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1056798270, now seen corresponding path program 1 times [2020-10-23 19:54:55,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:55,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170456157] [2020-10-23 19:54:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:55,824 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,256 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:54:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:54:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 19:54:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:56,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170456157] [2020-10-23 19:54:56,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:56,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:54:56,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301462745] [2020-10-23 19:54:56,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:54:56,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:56,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:54:56,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:54:56,531 INFO L87 Difference]: Start difference. First operand 663 states and 719 transitions. Second operand 14 states. [2020-10-23 19:54:57,328 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:57,736 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:58,118 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:58,514 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:58,866 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:00,015 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:00,423 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:00,834 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:01,283 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:01,685 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:04,053 INFO L93 Difference]: Finished difference Result 1395 states and 1620 transitions. [2020-10-23 19:55:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:55:04,053 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 212 [2020-10-23 19:55:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:04,059 INFO L225 Difference]: With dead ends: 1395 [2020-10-23 19:55:04,059 INFO L226 Difference]: Without dead ends: 852 [2020-10-23 19:55:04,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:55:04,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-23 19:55:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 675. [2020-10-23 19:55:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-23 19:55:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 731 transitions. [2020-10-23 19:55:04,386 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 731 transitions. Word has length 212 [2020-10-23 19:55:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:04,386 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 731 transitions. [2020-10-23 19:55:04,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:55:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 731 transitions. [2020-10-23 19:55:04,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 19:55:04,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:04,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:04,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:55:04,390 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:04,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:04,391 INFO L82 PathProgramCache]: Analyzing trace with hash 855775717, now seen corresponding path program 1 times [2020-10-23 19:55:04,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:04,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482190932] [2020-10-23 19:55:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:04,394 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,794 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:04,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:55:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:55:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 19:55:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:05,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482190932] [2020-10-23 19:55:05,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:05,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:55:05,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129161200] [2020-10-23 19:55:05,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:55:05,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:05,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:55:05,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:55:05,029 INFO L87 Difference]: Start difference. First operand 675 states and 731 transitions. Second operand 8 states. [2020-10-23 19:55:05,793 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:06,635 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:10,432 INFO L93 Difference]: Finished difference Result 1897 states and 2260 transitions. [2020-10-23 19:55:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 19:55:10,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-10-23 19:55:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:10,448 INFO L225 Difference]: With dead ends: 1897 [2020-10-23 19:55:10,448 INFO L226 Difference]: Without dead ends: 1342 [2020-10-23 19:55:10,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:55:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2020-10-23 19:55:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1109. [2020-10-23 19:55:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-10-23 19:55:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1237 transitions. [2020-10-23 19:55:11,074 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1237 transitions. Word has length 212 [2020-10-23 19:55:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:11,075 INFO L481 AbstractCegarLoop]: Abstraction has 1109 states and 1237 transitions. [2020-10-23 19:55:11,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:55:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1237 transitions. [2020-10-23 19:55:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-23 19:55:11,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:11,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:11,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:55:11,078 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:11,079 INFO L82 PathProgramCache]: Analyzing trace with hash -848209338, now seen corresponding path program 1 times [2020-10-23 19:55:11,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:11,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441097220] [2020-10-23 19:55:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:11,082 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,472 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:55:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:55:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:55:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:55:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-23 19:55:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:11,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441097220] [2020-10-23 19:55:11,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:11,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:55:11,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227029290] [2020-10-23 19:55:11,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:55:11,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:11,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:55:11,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:55:11,672 INFO L87 Difference]: Start difference. First operand 1109 states and 1237 transitions. Second operand 8 states. [2020-10-23 19:55:12,412 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:16,499 INFO L93 Difference]: Finished difference Result 2130 states and 2532 transitions. [2020-10-23 19:55:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 19:55:16,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-23 19:55:16,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:16,514 INFO L225 Difference]: With dead ends: 2130 [2020-10-23 19:55:16,514 INFO L226 Difference]: Without dead ends: 2126 [2020-10-23 19:55:16,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2020-10-23 19:55:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2020-10-23 19:55:17,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1784. [2020-10-23 19:55:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1784 states. [2020-10-23 19:55:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2013 transitions. [2020-10-23 19:55:17,471 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2013 transitions. Word has length 217 [2020-10-23 19:55:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:17,472 INFO L481 AbstractCegarLoop]: Abstraction has 1784 states and 2013 transitions. [2020-10-23 19:55:17,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:55:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2013 transitions. [2020-10-23 19:55:17,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-23 19:55:17,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:17,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:17,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:55:17,479 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:17,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:17,480 INFO L82 PathProgramCache]: Analyzing trace with hash 142015038, now seen corresponding path program 1 times [2020-10-23 19:55:17,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:17,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132973537] [2020-10-23 19:55:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:17,888 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:55:18,021 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:55:18,372 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:55:18,519 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:55:18,846 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:55:18,964 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:55:19,382 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:55:19,538 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:55:19,891 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:55:20,016 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:55:20,416 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:55:20,553 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:55:20,880 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2020-10-23 19:55:20,987 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:55:21,314 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:55:21,430 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:55:21,802 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2020-10-23 19:55:21,917 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:55:22,267 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:55:22,380 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:55:22,757 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:55:22,899 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:55:23,293 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:55:23,440 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:23,849 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:55:23,990 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:24,396 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:55:24,564 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:25,340 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:26,079 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:26,812 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:27,597 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:28,385 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:29,121 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:29,835 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:30,591 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:30,595 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:31,299 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:32,014 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:32,752 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:33,496 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:34,217 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:34,976 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:35,693 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:36,454 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:36,459 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:37,171 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:37,887 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:38,609 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:39,366 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:40,088 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:40,790 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:41,492 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:42,236 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:42,240 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:43,003 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:43,750 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:44,503 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:45,259 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:45,999 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:46,738 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:47,480 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:48,227 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:48,956 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:49,691 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:50,428 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:51,173 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:51,898 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:52,627 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:53,376 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:54,106 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:55:54,110 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:54,817 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:55,532 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:56,278 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:56,994 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:57,707 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:58,431 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:59,178 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:59,893 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:59,898 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:00,617 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:01,362 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:02,120 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:02,854 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:03,586 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:04,319 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:05,053 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:05,782 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:06,519 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:07,243 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:07,971 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:08,697 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:09,453 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:10,187 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:10,942 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:11,677 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:56:11,681 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:12,401 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 19:56:13,107 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2020-10-23 19:56:13,811 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 19:56:14,515 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2020-10-23 19:56:15,222 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 19:56:15,930 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2020-10-23 19:56:16,640 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 19:56:17,357 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2020-10-23 19:56:17,361 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:18,080 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:18,804 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:19,536 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:20,292 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:21,012 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:21,736 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:22,483 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:23,238 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:23,242 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:23,949 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:56:24,654 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:56:25,373 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:56:26,097 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:56:26,822 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:56:27,535 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:56:28,256 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:56:28,969 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:56:28,972 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:29,690 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:56:30,424 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:56:31,155 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:56:31,892 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:56:32,617 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:56:33,343 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:56:34,070 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:56:34,813 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:56:34,816 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:35,567 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:36,315 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:37,072 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:37,834 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:38,643 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:39,460 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:40,268 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:41,105 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:41,949 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:42,781 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:43,578 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:44,418 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:45,246 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:46,080 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:46,912 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:47,759 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:56:47,763 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:48,580 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:49,398 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:50,199 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:56:51,028 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:56:51,817 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:56:52,626 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:53,418 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:54,192 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:54,976 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:55,787 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:56,609 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:57,438 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:58,237 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:56:59,068 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:56:59,859 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:00,658 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:00,661 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:57:01,448 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:57:02,199 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:02,976 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:03,749 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:04,534 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:05,350 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:57:06,113 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:57:06,935 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:07,752 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:08,570 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:57:09,407 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:10,256 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:11,095 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:11,931 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:12,742 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:13,586 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:13,590 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:57:14,423 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:57:15,262 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:16,102 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:16,956 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:17,779 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:18,587 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:57:19,408 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:57:20,207 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:21,046 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:21,840 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:22,608 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:23,369 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:57:24,183 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:25,019 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:25,829 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:26,673 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:57:26,676 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:57:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:57:27,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:57:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:57:28,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:57:28,911 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:57:28,911 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:57:28,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 19:57:28,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:57:28 BoogieIcfgContainer [2020-10-23 19:57:28,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:57:28,978 INFO L168 Benchmark]: Toolchain (without parser) took 197845.78 ms. Allocated memory was 151.0 MB in the beginning and 830.5 MB in the end (delta: 679.5 MB). Free memory was 126.3 MB in the beginning and 460.0 MB in the end (delta: -333.6 MB). Peak memory consumption was 347.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:28,982 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:57:28,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.61 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:28,983 INFO L168 Benchmark]: Boogie Preprocessor took 128.91 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 131.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:28,983 INFO L168 Benchmark]: RCFGBuilder took 1525.39 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 83.8 MB in the end (delta: 48.1 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:28,984 INFO L168 Benchmark]: TraceAbstraction took 195566.89 ms. Allocated memory was 151.0 MB in the beginning and 830.5 MB in the end (delta: 679.5 MB). Free memory was 83.3 MB in the beginning and 460.0 MB in the end (delta: -376.7 MB). Peak memory consumption was 303.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:28,987 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 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 610.61 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 128.91 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 131.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1525.39 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 83.8 MB in the end (delta: 48.1 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 195566.89 ms. Allocated memory was 151.0 MB in the beginning and 830.5 MB in the end (delta: 679.5 MB). Free memory was 83.3 MB in the beginning and 460.0 MB in the end (delta: -376.7 MB). Peak memory consumption was 303.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L289] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L495] int pumpRunning = 0; [L496] int systemActive = 1; [L719] int methAndRunningLastTime ; [L758] int cleanupTimeShifts = 4; [L859] int waterLevel = 1; [L860] int methaneLevelCritical = 0; [L835] int retValue_acc ; [L836] int tmp ; [L840] FCALL select_helpers() [L841] FCALL select_features() [L842] CALL, EXPR valid_product() [L988] int retValue_acc ; [L991] retValue_acc = 1 [L992] return (retValue_acc); [L842] RET, EXPR valid_product() [L842] tmp = valid_product() [L844] COND TRUE \read(tmp) [L846] FCALL setup() [L847] CALL runTest() [L825] CALL __utac_acc__Specification2_spec__1() [L724] methAndRunningLastTime = 0 [L825] RET __utac_acc__Specification2_spec__1() [L826] CALL test() [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) [L77] CALL waterRise() [L877] COND TRUE waterLevel < 2 [L878] waterLevel = waterLevel + 1 [L77] RET waterRise() [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___0) [L87] CALL changeMethaneLevel() [L889] COND FALSE !(\read(methaneLevelCritical)) [L892] methaneLevelCritical = 1 [L87] RET changeMethaneLevel() [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) [L108] CALL timeShift() [L503] COND FALSE !(\read(pumpRunning)) [L510] COND TRUE \read(systemActive) [L512] CALL processEnvironment() [L584] int tmp ; [L587] COND FALSE !(\read(pumpRunning)) [L602] CALL processEnvironment__wrappee__lowWaterSensor() [L558] int tmp ; [L561] COND FALSE !(\read(pumpRunning)) [L576] CALL processEnvironment__wrappee__highWaterSensor() [L532] int tmp ; [L535] COND TRUE ! pumpRunning [L537] CALL, EXPR isHighWaterLevel() [L681] int retValue_acc ; [L682] int tmp ; [L683] int tmp___0 ; [L687] CALL, EXPR isHighWaterSensorDry() [L939] int retValue_acc ; [L942] COND FALSE !(waterLevel < 2) [L946] retValue_acc = 0 [L947] return (retValue_acc); [L687] RET, EXPR isHighWaterSensorDry() [L687] tmp = isHighWaterSensorDry() [L689] COND FALSE !(\read(tmp)) [L692] tmp___0 = 1 [L694] retValue_acc = tmp___0 [L695] return (retValue_acc); [L537] RET, EXPR isHighWaterLevel() [L537] tmp = isHighWaterLevel() [L539] COND TRUE \read(tmp) [L541] CALL activatePump() [L612] pumpRunning = 1 [L541] RET activatePump() [L576] RET processEnvironment__wrappee__highWaterSensor() [L602] RET processEnvironment__wrappee__lowWaterSensor() [L512] RET processEnvironment() [L518] CALL __utac_acc__Specification2_spec__2() [L729] int tmp ; [L730] int tmp___0 ; [L734] CALL, EXPR isMethaneLevelCritical() [L898] int retValue_acc ; [L901] retValue_acc = methaneLevelCritical [L902] return (retValue_acc); [L734] RET, EXPR isMethaneLevelCritical() [L734] tmp = isMethaneLevelCritical() [L736] COND TRUE \read(tmp) [L738] CALL, EXPR isPumpRunning() [L636] int retValue_acc ; [L639] retValue_acc = pumpRunning [L640] return (retValue_acc); [L738] RET, EXPR isPumpRunning() [L738] tmp___0 = isPumpRunning() [L740] COND TRUE \read(tmp___0) [L741] COND FALSE !(\read(methAndRunningLastTime)) [L746] methAndRunningLastTime = 1 [L518] RET __utac_acc__Specification2_spec__2() [L108] RET timeShift() [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) [L108] CALL timeShift() [L503] COND FALSE !(\read(pumpRunning)) [L510] COND TRUE \read(systemActive) [L512] CALL processEnvironment() [L584] int tmp ; [L587] COND FALSE !(\read(pumpRunning)) [L602] CALL processEnvironment__wrappee__lowWaterSensor() [L558] int tmp ; [L561] COND FALSE !(\read(pumpRunning)) [L576] CALL processEnvironment__wrappee__highWaterSensor() [L532] int tmp ; [L535] COND TRUE ! pumpRunning [L537] CALL, EXPR isHighWaterLevel() [L681] int retValue_acc ; [L682] int tmp ; [L683] int tmp___0 ; [L687] CALL, EXPR isHighWaterSensorDry() [L939] int retValue_acc ; [L942] COND FALSE !(waterLevel < 2) [L946] retValue_acc = 0 [L947] return (retValue_acc); [L687] RET, EXPR isHighWaterSensorDry() [L687] tmp = isHighWaterSensorDry() [L689] COND FALSE !(\read(tmp)) [L692] tmp___0 = 1 [L694] retValue_acc = tmp___0 [L695] return (retValue_acc); [L537] RET, EXPR isHighWaterLevel() [L537] tmp = isHighWaterLevel() [L539] COND TRUE \read(tmp) [L541] CALL activatePump() [L612] pumpRunning = 1 [L541] RET activatePump() [L576] RET processEnvironment__wrappee__highWaterSensor() [L602] RET processEnvironment__wrappee__lowWaterSensor() [L512] RET processEnvironment() [L518] CALL __utac_acc__Specification2_spec__2() [L729] int tmp ; [L730] int tmp___0 ; [L734] CALL, EXPR isMethaneLevelCritical() [L898] int retValue_acc ; [L901] retValue_acc = methaneLevelCritical [L902] return (retValue_acc); [L734] RET, EXPR isMethaneLevelCritical() [L734] tmp = isMethaneLevelCritical() [L736] COND TRUE \read(tmp) [L738] CALL, EXPR isPumpRunning() [L636] int retValue_acc ; [L639] retValue_acc = pumpRunning [L640] return (retValue_acc); [L738] RET, EXPR isPumpRunning() [L738] tmp___0 = isPumpRunning() [L740] COND TRUE \read(tmp___0) [L741] COND TRUE \read(methAndRunningLastTime) [L743] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec2_product53.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 671 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 195.4s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 53.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2778 SDtfs, 6694 SDslu, 4698 SDs, 0 SdLazy, 10176 SolverSat, 1854 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 500 GetRequests, 313 SyntacticMatches, 5 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 23.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1784occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 1420 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...