/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_spec4_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:29:15,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:29:15,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:29:15,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:29:15,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:29:15,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:29:15,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:29:15,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:29:15,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:29:15,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:29:15,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:29:15,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:29:15,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:29:15,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:29:15,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:29:15,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:29:15,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:29:15,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:29:15,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:29:15,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:29:15,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:29:15,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:29:15,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:29:15,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:29:15,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:29:15,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:29:15,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:29:15,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:29:15,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:29:15,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:29:15,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:29:15,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:29:15,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:29:15,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:29:15,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:29:15,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:29:15,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:29:15,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:29:15,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:29:15,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:29:15,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:29:15,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:29:15,387 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:29:15,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:29:15,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:29:15,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:29:15,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:29:15,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:29:15,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:29:15,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:29:15,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:29:15,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:29:15,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:29:15,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:29:15,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:29:15,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:29:15,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:29:15,399 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:29:15,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:29:15,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:29:15,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:29:15,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:29:15,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:29:15,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:29:15,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:29:15,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:29:15,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:29:16,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:29:16,004 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:29:16,005 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:29:16,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c [2021-02-21 19:29:16,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0ff8c7c/1d194fc31a66434cb0696083f7852331/FLAG58037ec41 [2021-02-21 19:29:17,132 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:29:17,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c [2021-02-21 19:29:17,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0ff8c7c/1d194fc31a66434cb0696083f7852331/FLAG58037ec41 [2021-02-21 19:29:17,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0ff8c7c/1d194fc31a66434cb0696083f7852331 [2021-02-21 19:29:17,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:29:17,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:29:17,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:17,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:29:17,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:29:17,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:29:17" (1/1) ... [2021-02-21 19:29:17,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af9bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:17, skipping insertion in model container [2021-02-21 19:29:17,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:29:17" (1/1) ... [2021-02-21 19:29:17,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:29:17,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:29:17,827 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c[18004,18017] [2021-02-21 19:29:17,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:17,876 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:29:18,089 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c[18004,18017] [2021-02-21 19:29:18,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:18,183 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:29:18,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18 WrapperNode [2021-02-21 19:29:18,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:18,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:29:18,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:29:18,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:29:18,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:29:18,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:29:18,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:29:18,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:29:18,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:29:18,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:29:18,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:29:18,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:18,566 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:29:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:29:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:29:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:29:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:29:18,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:29:18,568 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:29:18,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:29:18,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:29:18,569 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:29:18,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:18,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:18,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:18,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:29:18,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:29:18,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:29:18,573 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:29:18,576 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:29:18,577 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:29:18,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:29:18,577 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:29:18,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:29:18,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:29:18,578 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:29:18,578 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:29:18,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:29:18,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:29:18,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:29:18,578 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:29:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:29:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:29:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:29:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:29:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:29:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:29:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:29:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:29:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:29:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:29:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:29:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:29:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:29:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:29:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:29:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:29:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:29:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:29:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:29:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:29:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:29:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:29:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:29:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:29:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:29:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:29:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:29:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:29:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:29:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:29:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:29:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:29:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:29:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:29:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:29:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:29:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:29:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:29:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:29:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:29:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:29:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:29:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:29:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:29:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:29:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:29:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:29:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:29:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:29:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:29:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:29:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:29:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:29:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:29:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:29:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:29:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:29:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:29:20,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:29:20,759 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:29:20,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:20 BoogieIcfgContainer [2021-02-21 19:29:20,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:29:20,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:29:20,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:29:20,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:29:20,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:29:17" (1/3) ... [2021-02-21 19:29:20,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e7dd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:20, skipping insertion in model container [2021-02-21 19:29:20,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (2/3) ... [2021-02-21 19:29:20,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e7dd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:20, skipping insertion in model container [2021-02-21 19:29:20,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:20" (3/3) ... [2021-02-21 19:29:20,788 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product31.cil.c [2021-02-21 19:29:20,802 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:29:20,810 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:29:20,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:29:20,896 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:29:20,897 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:29:20,897 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:29:20,897 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:29:20,897 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:29:20,898 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:29:20,899 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:29:20,899 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:29:20,949 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-21 19:29:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:29:20,983 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:20,984 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] [2021-02-21 19:29:20,985 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:20,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2057795247, now seen corresponding path program 1 times [2021-02-21 19:29:21,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:21,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118551652] [2021-02-21 19:29:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:21,116 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:22,142 WARN L202 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:22,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:22,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:22,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:22,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:22,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:22,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:22,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:22,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:22,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:22,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:22,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:22,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:22,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:22,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:29:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:22,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:22,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:22,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:22,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:22,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:22,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118551652] [2021-02-21 19:29:22,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:22,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:29:22,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520951321] [2021-02-21 19:29:22,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:29:22,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:22,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:29:22,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:22,500 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-21 19:29:25,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:25,034 INFO L93 Difference]: Finished difference Result 485 states and 579 transitions. [2021-02-21 19:29:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:29:25,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:29:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:25,060 INFO L225 Difference]: With dead ends: 485 [2021-02-21 19:29:25,061 INFO L226 Difference]: Without dead ends: 303 [2021-02-21 19:29:25,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-21 19:29:25,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 260. [2021-02-21 19:29:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-21 19:29:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 283 transitions. [2021-02-21 19:29:25,344 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 283 transitions. Word has length 147 [2021-02-21 19:29:25,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:25,350 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 283 transitions. [2021-02-21 19:29:25,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:29:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 283 transitions. [2021-02-21 19:29:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:29:25,370 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:25,370 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] [2021-02-21 19:29:25,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:29:25,371 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:25,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:25,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1453079616, now seen corresponding path program 1 times [2021-02-21 19:29:25,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:25,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177039407] [2021-02-21 19:29:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:25,387 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:25,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:25,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:25,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:25,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:25,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:25,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:25,996 WARN L202 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:25,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:29:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:29:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:26,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177039407] [2021-02-21 19:29:26,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:26,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:29:26,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131657790] [2021-02-21 19:29:26,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:29:26,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:26,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:29:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:29:26,142 INFO L87 Difference]: Start difference. First operand 260 states and 283 transitions. Second operand 4 states. [2021-02-21 19:29:27,169 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:28,700 INFO L93 Difference]: Finished difference Result 395 states and 445 transitions. [2021-02-21 19:29:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:29:28,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:29:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:28,707 INFO L225 Difference]: With dead ends: 395 [2021-02-21 19:29:28,707 INFO L226 Difference]: Without dead ends: 286 [2021-02-21 19:29:28,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:29:28,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-02-21 19:29:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 250. [2021-02-21 19:29:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-21 19:29:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2021-02-21 19:29:28,853 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 148 [2021-02-21 19:29:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:28,853 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2021-02-21 19:29:28,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:29:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2021-02-21 19:29:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:29:28,857 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:28,857 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] [2021-02-21 19:29:28,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:29:28,858 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:28,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2024396768, now seen corresponding path program 1 times [2021-02-21 19:29:28,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:28,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050937108] [2021-02-21 19:29:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:28,865 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:28,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:28,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:28,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:28,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:28,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:28,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:29,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:29,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:29,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:29,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:29,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,464 WARN L202 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:29,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:29:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:29,737 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:29:29,739 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:29:29,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:29:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:29,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050937108] [2021-02-21 19:29:29,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:29,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:29:29,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643407344] [2021-02-21 19:29:29,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:29:29,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:29,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:29:29,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:29:29,816 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 9 states. [2021-02-21 19:29:30,555 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:31,126 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:31,561 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:32,009 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:32,441 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:32,897 WARN L202 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:34,367 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:37,376 INFO L93 Difference]: Finished difference Result 651 states and 751 transitions. [2021-02-21 19:29:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:29:37,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:29:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:37,384 INFO L225 Difference]: With dead ends: 651 [2021-02-21 19:29:37,384 INFO L226 Difference]: Without dead ends: 516 [2021-02-21 19:29:37,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:29:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-02-21 19:29:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 449. [2021-02-21 19:29:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2021-02-21 19:29:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 503 transitions. [2021-02-21 19:29:37,639 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 503 transitions. Word has length 157 [2021-02-21 19:29:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:37,639 INFO L480 AbstractCegarLoop]: Abstraction has 449 states and 503 transitions. [2021-02-21 19:29:37,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:29:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 503 transitions. [2021-02-21 19:29:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:29:37,644 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:37,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:37,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:29:37,645 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:37,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1569204534, now seen corresponding path program 1 times [2021-02-21 19:29:37,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:37,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865930150] [2021-02-21 19:29:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:37,651 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:37,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:37,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:37,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:37,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:37,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,259 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:29:38,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:38,375 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:29:38,376 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:29:38,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:29:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:29:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:38,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:29:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:38,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865930150] [2021-02-21 19:29:38,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:38,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:29:38,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739534302] [2021-02-21 19:29:38,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:29:38,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:38,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:29:38,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:29:38,535 INFO L87 Difference]: Start difference. First operand 449 states and 503 transitions. Second operand 14 states. [2021-02-21 19:29:39,363 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:39,915 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:40,369 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:40,797 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:41,229 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:41,626 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:42,546 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:44,337 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:44,927 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:45,546 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:46,028 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:46,479 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:46,903 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:47,372 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:47,858 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:48,267 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:48,836 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:49,452 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:49,949 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:50,462 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:52,720 INFO L93 Difference]: Finished difference Result 1535 states and 1876 transitions. [2021-02-21 19:29:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:29:52,721 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:29:52,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:52,732 INFO L225 Difference]: With dead ends: 1535 [2021-02-21 19:29:52,733 INFO L226 Difference]: Without dead ends: 1201 [2021-02-21 19:29:52,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:29:52,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2021-02-21 19:29:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1058. [2021-02-21 19:29:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2021-02-21 19:29:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1226 transitions. [2021-02-21 19:29:53,396 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1226 transitions. Word has length 166 [2021-02-21 19:29:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:53,397 INFO L480 AbstractCegarLoop]: Abstraction has 1058 states and 1226 transitions. [2021-02-21 19:29:53,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:29:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1226 transitions. [2021-02-21 19:29:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:29:53,403 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:53,404 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] [2021-02-21 19:29:53,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:29:53,405 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:53,406 INFO L82 PathProgramCache]: Analyzing trace with hash 843183697, now seen corresponding path program 1 times [2021-02-21 19:29:53,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:53,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596660181] [2021-02-21 19:29:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:53,410 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:53,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:53,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:53,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:53,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:53,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:53,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:53,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:53,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:53,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:53,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:53,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:53,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:53,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:53,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:53,956 WARN L202 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:53,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:54,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:54,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:54,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:29:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:29:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:29:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:29:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:54,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:54,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:54,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596660181] [2021-02-21 19:29:54,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:54,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:29:54,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002013294] [2021-02-21 19:29:54,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:29:54,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:54,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:29:54,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:29:54,208 INFO L87 Difference]: Start difference. First operand 1058 states and 1226 transitions. Second operand 6 states. [2021-02-21 19:29:54,983 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:56,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:56,436 INFO L93 Difference]: Finished difference Result 1650 states and 1972 transitions. [2021-02-21 19:29:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:29:56,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:29:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:56,444 INFO L225 Difference]: With dead ends: 1650 [2021-02-21 19:29:56,444 INFO L226 Difference]: Without dead ends: 707 [2021-02-21 19:29:56,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:29:56,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-02-21 19:29:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 673. [2021-02-21 19:29:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2021-02-21 19:29:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 732 transitions. [2021-02-21 19:29:56,815 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 732 transitions. Word has length 171 [2021-02-21 19:29:56,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:56,817 INFO L480 AbstractCegarLoop]: Abstraction has 673 states and 732 transitions. [2021-02-21 19:29:56,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:29:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 732 transitions. [2021-02-21 19:29:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:29:56,822 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:56,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:56,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:29:56,823 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:56,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:56,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1571426906, now seen corresponding path program 1 times [2021-02-21 19:29:56,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:56,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17180197] [2021-02-21 19:29:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY