/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:37:15,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:37:15,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:37:15,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:37:15,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:37:15,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:37:15,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:37:15,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:37:15,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:37:15,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:37:15,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:37:15,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:37:15,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:37:15,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:37:15,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:37:15,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:37:15,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:37:15,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:37:15,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:37:15,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:37:15,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:37:15,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:37:15,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:37:15,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:37:15,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:37:15,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:37:15,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:37:15,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:37:15,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:37:15,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:37:15,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:37:15,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:37:15,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:37:15,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:37:15,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:37:15,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:37:15,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:37:15,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:37:15,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:37:15,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:37:15,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:37:15,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:37:15,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:37:15,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:37:15,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:37:15,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:37:15,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:37:15,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:37:15,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:37:15,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:37:15,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:37:15,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:37:15,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:37:15,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:37:15,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:37:15,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:37:15,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:37:15,538 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:37:15,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:37:15,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:37:15,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:37:15,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:37:15,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:37:15,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:37:15,540 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:37:15,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:37:15,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:37:15,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:37:15,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:37:15,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:37:15,928 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:37:15,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2021-02-24 03:37:16,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5720b3187/28054787332e4d62a29df0d06506cab2/FLAGa9d2ca039 [2021-02-24 03:37:16,574 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:37:16,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2021-02-24 03:37:16,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5720b3187/28054787332e4d62a29df0d06506cab2/FLAGa9d2ca039 [2021-02-24 03:37:16,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5720b3187/28054787332e4d62a29df0d06506cab2 [2021-02-24 03:37:16,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:37:16,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:37:16,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:37:16,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:37:16,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:37:16,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:37:16" (1/1) ... [2021-02-24 03:37:16,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4fcbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:16, skipping insertion in model container [2021-02-24 03:37:16,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:37:16" (1/1) ... [2021-02-24 03:37:16,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:37:16,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:37:17,217 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_product34.cil.c[7702,7715] [2021-02-24 03:37:17,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:37:17,298 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:37:17,341 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_product34.cil.c[7702,7715] [2021-02-24 03:37:17,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:37:17,420 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:37:17,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17 WrapperNode [2021-02-24 03:37:17,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:37:17,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:37:17,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:37:17,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:37:17,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (1/1) ... [2021-02-24 03:37:17,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (1/1) ... [2021-02-24 03:37:17,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (1/1) ... [2021-02-24 03:37:17,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (1/1) ... [2021-02-24 03:37:17,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (1/1) ... [2021-02-24 03:37:17,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (1/1) ... [2021-02-24 03:37:17,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (1/1) ... [2021-02-24 03:37:17,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:37:17,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:37:17,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:37:17,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:37:17,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (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 [2021-02-24 03:37:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:37:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:37:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:37:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:37:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-24 03:37:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:37:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:37:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:37:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:37:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:37:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:37:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:37:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:37:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:37:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:37:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:37:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:37:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:37:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:37:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:37:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:37:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:37:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:37:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:37:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:37:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:37:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:37:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:37:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:37:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:37:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:37:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:37:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:37:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:37:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:37:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:37:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:37:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:37:17,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:37:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:37:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:37:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:37:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:37:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:37:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:37:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:37:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:37:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:37:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-24 03:37:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:37:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:37:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:37:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:37:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:37:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:37:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:37:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:37:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:37:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:37:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:37:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:37:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:37:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:37:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:37:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:37:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:37:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:37:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:37:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:37:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:37:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:37:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:37:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:37:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:37:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:37:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:37:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:37:17,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:37:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:37:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:37:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:37:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:37:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:37:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:37:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:37:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:37:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:37:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:37:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:37:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:37:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:37:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:37:18,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:37:18,996 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:37:19,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:37:19 BoogieIcfgContainer [2021-02-24 03:37:19,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:37:19,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:37:19,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:37:19,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:37:19,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:37:16" (1/3) ... [2021-02-24 03:37:19,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607e132f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:37:19, skipping insertion in model container [2021-02-24 03:37:19,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:37:17" (2/3) ... [2021-02-24 03:37:19,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607e132f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:37:19, skipping insertion in model container [2021-02-24 03:37:19,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:37:19" (3/3) ... [2021-02-24 03:37:19,013 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2021-02-24 03:37:19,024 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:37:19,029 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:37:19,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:37:19,087 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:37:19,088 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:37:19,088 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:37:19,088 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:37:19,089 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:37:19,089 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:37:19,089 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:37:19,090 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:37:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states. [2021-02-24 03:37:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-24 03:37:19,155 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:19,156 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] [2021-02-24 03:37:19,156 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:19,165 INFO L82 PathProgramCache]: Analyzing trace with hash -232000956, now seen corresponding path program 1 times [2021-02-24 03:37:19,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:19,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780779716] [2021-02-24 03:37:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:19,257 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:19,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:19,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:19,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:19,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:20,042 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:20,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:20,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:20,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:20,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:20,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:20,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:37:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:20,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:20,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:37:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:20,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:20,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780779716] [2021-02-24 03:37:20,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:20,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:37:20,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93590018] [2021-02-24 03:37:20,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:37:20,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:37:20,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:37:20,248 INFO L87 Difference]: Start difference. First operand 288 states. Second operand 3 states. [2021-02-24 03:37:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:21,861 INFO L93 Difference]: Finished difference Result 434 states and 517 transitions. [2021-02-24 03:37:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:37:21,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-24 03:37:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:21,891 INFO L225 Difference]: With dead ends: 434 [2021-02-24 03:37:21,891 INFO L226 Difference]: Without dead ends: 276 [2021-02-24 03:37:21,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:37:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-24 03:37:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 236. [2021-02-24 03:37:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-24 03:37:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 254 transitions. [2021-02-24 03:37:22,051 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 254 transitions. Word has length 147 [2021-02-24 03:37:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:22,052 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 254 transitions. [2021-02-24 03:37:22,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:37:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 254 transitions. [2021-02-24 03:37:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 03:37:22,057 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:22,057 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] [2021-02-24 03:37:22,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:37:22,058 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash -316381830, now seen corresponding path program 1 times [2021-02-24 03:37:22,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:22,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106185428] [2021-02-24 03:37:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:22,063 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:22,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:22,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,566 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:22,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:22,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:22,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:22,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:22,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:22,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:37:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:22,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:37:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:22,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:22,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:22,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106185428] [2021-02-24 03:37:22,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:22,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:37:22,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000157910] [2021-02-24 03:37:22,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:37:22,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:22,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:37:22,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:37:22,667 INFO L87 Difference]: Start difference. First operand 236 states and 254 transitions. Second operand 4 states. [2021-02-24 03:37:23,441 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:24,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:24,270 INFO L93 Difference]: Finished difference Result 346 states and 387 transitions. [2021-02-24 03:37:24,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:37:24,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-24 03:37:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:24,283 INFO L225 Difference]: With dead ends: 346 [2021-02-24 03:37:24,283 INFO L226 Difference]: Without dead ends: 259 [2021-02-24 03:37:24,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:37:24,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-24 03:37:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 226. [2021-02-24 03:37:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-02-24 03:37:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 241 transitions. [2021-02-24 03:37:24,426 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 241 transitions. Word has length 148 [2021-02-24 03:37:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:24,427 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 241 transitions. [2021-02-24 03:37:24,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:37:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 241 transitions. [2021-02-24 03:37:24,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-24 03:37:24,430 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:24,430 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] [2021-02-24 03:37:24,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:37:24,431 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:24,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1062054553, now seen corresponding path program 1 times [2021-02-24 03:37:24,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:24,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398196558] [2021-02-24 03:37:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:24,437 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:24,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:24,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:24,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,850 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:24,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:37:24,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:37:24,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:37:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:24,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-24 03:37:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:37:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:24,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:24,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:25,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398196558] [2021-02-24 03:37:25,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:25,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:37:25,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577736202] [2021-02-24 03:37:25,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:37:25,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:25,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:37:25,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:37:25,037 INFO L87 Difference]: Start difference. First operand 226 states and 241 transitions. Second operand 10 states. [2021-02-24 03:37:25,617 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:37:26,066 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:26,442 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:37:26,812 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:27,179 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:27,519 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:28,972 INFO L93 Difference]: Finished difference Result 392 states and 449 transitions. [2021-02-24 03:37:28,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:37:28,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-24 03:37:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:28,975 INFO L225 Difference]: With dead ends: 392 [2021-02-24 03:37:28,975 INFO L226 Difference]: Without dead ends: 281 [2021-02-24 03:37:28,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-24 03:37:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-24 03:37:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 226. [2021-02-24 03:37:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-02-24 03:37:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 240 transitions. [2021-02-24 03:37:29,065 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 240 transitions. Word has length 161 [2021-02-24 03:37:29,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:29,066 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 240 transitions. [2021-02-24 03:37:29,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:37:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 240 transitions. [2021-02-24 03:37:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-24 03:37:29,068 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:29,069 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] [2021-02-24 03:37:29,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:37:29,069 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash 541101462, now seen corresponding path program 1 times [2021-02-24 03:37:29,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:29,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854315756] [2021-02-24 03:37:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:29,074 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:29,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:29,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:29,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:29,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:29,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,542 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:29,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:37:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:37:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:29,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:37:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:37:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-24 03:37:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:29,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:29,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:29,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854315756] [2021-02-24 03:37:29,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:29,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:37:29,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002981822] [2021-02-24 03:37:29,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:37:29,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:29,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:37:29,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:37:29,762 INFO L87 Difference]: Start difference. First operand 226 states and 240 transitions. Second operand 7 states. [2021-02-24 03:37:30,399 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:37:32,211 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:32,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:32,971 INFO L93 Difference]: Finished difference Result 563 states and 666 transitions. [2021-02-24 03:37:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 03:37:32,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2021-02-24 03:37:32,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:32,977 INFO L225 Difference]: With dead ends: 563 [2021-02-24 03:37:32,977 INFO L226 Difference]: Without dead ends: 452 [2021-02-24 03:37:32,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:37:32,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-02-24 03:37:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 325. [2021-02-24 03:37:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-24 03:37:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 349 transitions. [2021-02-24 03:37:33,135 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 349 transitions. Word has length 169 [2021-02-24 03:37:33,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:33,136 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 349 transitions. [2021-02-24 03:37:33,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:37:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 349 transitions. [2021-02-24 03:37:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-02-24 03:37:33,140 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:33,140 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] [2021-02-24 03:37:33,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:37:33,140 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:33,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:33,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1453830197, now seen corresponding path program 1 times [2021-02-24 03:37:33,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:33,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294809636] [2021-02-24 03:37:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:33,145 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:33,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:33,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,563 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:37:33,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:37:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:37:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:37:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:37:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:33,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:33,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:37:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:33,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:37:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-24 03:37:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-24 03:37:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:33,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:33,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:33,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294809636] [2021-02-24 03:37:33,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:33,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 03:37:33,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153280430] [2021-02-24 03:37:33,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 03:37:33,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:33,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 03:37:33,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-24 03:37:33,969 INFO L87 Difference]: Start difference. First operand 325 states and 349 transitions. Second operand 13 states. [2021-02-24 03:37:34,819 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:35,167 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:37:35,532 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:35,901 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:36,244 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:37,263 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:37,657 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:38,055 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:38,465 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:38,847 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:40,213 INFO L93 Difference]: Finished difference Result 667 states and 787 transitions. [2021-02-24 03:37:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:37:40,213 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 193 [2021-02-24 03:37:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:40,218 INFO L225 Difference]: With dead ends: 667 [2021-02-24 03:37:40,218 INFO L226 Difference]: Without dead ends: 457 [2021-02-24 03:37:40,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-24 03:37:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-02-24 03:37:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 331. [2021-02-24 03:37:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2021-02-24 03:37:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 355 transitions. [2021-02-24 03:37:40,355 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 355 transitions. Word has length 193 [2021-02-24 03:37:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:40,355 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 355 transitions. [2021-02-24 03:37:40,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 03:37:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 355 transitions. [2021-02-24 03:37:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-02-24 03:37:40,358 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:40,358 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] [2021-02-24 03:37:40,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:37:40,359 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:40,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1224447851, now seen corresponding path program 1 times [2021-02-24 03:37:40,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:40,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408070895] [2021-02-24 03:37:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:40,363 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:40,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:40,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:40,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:40,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:40,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:40,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:40,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:40,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:40,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:40,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,775 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:37:40,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:37:40,907 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:37:40,908 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:37:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:37:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:37:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:37:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:37:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:40,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:37:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:40,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:40,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:41,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-24 03:37:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:41,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:41,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:41,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:41,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:41,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:41,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:41,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-24 03:37:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:41,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:41,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:41,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408070895] [2021-02-24 03:37:41,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:41,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-24 03:37:41,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135534567] [2021-02-24 03:37:41,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 03:37:41,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:41,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 03:37:41,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-24 03:37:41,103 INFO L87 Difference]: Start difference. First operand 331 states and 355 transitions. Second operand 15 states. [2021-02-24 03:37:41,751 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:37:42,297 WARN L202 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:42,721 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:37:43,127 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:43,520 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:43,911 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:44,737 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:46,248 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:46,637 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:47,057 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:47,448 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:47,828 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-24 03:37:48,202 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:37:48,587 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:48,971 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:49,371 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-24 03:37:49,766 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:51,383 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:37:51,740 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:52,166 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:53,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:53,527 INFO L93 Difference]: Finished difference Result 1165 states and 1470 transitions. [2021-02-24 03:37:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-24 03:37:53,527 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 193 [2021-02-24 03:37:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:53,542 INFO L225 Difference]: With dead ends: 1165 [2021-02-24 03:37:53,542 INFO L226 Difference]: Without dead ends: 949 [2021-02-24 03:37:53,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-24 03:37:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-02-24 03:37:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 650. [2021-02-24 03:37:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2021-02-24 03:37:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 718 transitions. [2021-02-24 03:37:53,938 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 718 transitions. Word has length 193 [2021-02-24 03:37:53,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:53,939 INFO L480 AbstractCegarLoop]: Abstraction has 650 states and 718 transitions. [2021-02-24 03:37:53,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 03:37:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 718 transitions. [2021-02-24 03:37:53,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-02-24 03:37:53,947 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:53,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:37:53,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:37:53,949 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1362890571, now seen corresponding path program 1 times [2021-02-24 03:37:53,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:53,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192838525] [2021-02-24 03:37:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:54,020 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 03:37:54,027 INFO L168 Benchmark]: Toolchain (without parser) took 37126.13 ms. Allocated memory was 162.5 MB in the beginning and 494.9 MB in the end (delta: 332.4 MB). Free memory was 146.4 MB in the beginning and 318.0 MB in the end (delta: -171.6 MB). Peak memory consumption was 161.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:54,027 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 162.5 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:37:54,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.15 ms. Allocated memory is still 162.5 MB. Free memory was 145.3 MB in the beginning and 124.8 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:54,032 INFO L168 Benchmark]: Boogie Preprocessor took 185.05 ms. Allocated memory is still 162.5 MB. Free memory was 124.8 MB in the beginning and 142.5 MB in the end (delta: -17.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:54,032 INFO L168 Benchmark]: RCFGBuilder took 1393.20 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 142.5 MB in the beginning and 119.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:54,033 INFO L168 Benchmark]: TraceAbstraction took 35017.60 ms. Allocated memory was 195.0 MB in the beginning and 494.9 MB in the end (delta: 299.9 MB). Free memory was 118.6 MB in the beginning and 318.0 MB in the end (delta: -199.4 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:54,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 162.5 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 510.15 ms. Allocated memory is still 162.5 MB. Free memory was 145.3 MB in the beginning and 124.8 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 185.05 ms. Allocated memory is still 162.5 MB. Free memory was 124.8 MB in the beginning and 142.5 MB in the end (delta: -17.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1393.20 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 142.5 MB in the beginning and 119.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 35017.60 ms. Allocated memory was 195.0 MB in the beginning and 494.9 MB in the end (delta: 299.9 MB). Free memory was 118.6 MB in the beginning and 318.0 MB in the end (delta: -199.4 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...