/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:00:27,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:00:27,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:00:27,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:00:27,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:00:27,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:00:27,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:00:27,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:00:27,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:00:27,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:00:27,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:00:27,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:00:27,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:00:27,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:00:27,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:00:27,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:00:27,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:00:27,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:00:27,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:00:27,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:00:27,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:00:27,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:00:27,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:00:27,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:00:27,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:00:27,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:00:27,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:00:27,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:00:27,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:00:27,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:00:27,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:00:27,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:00:27,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:00:27,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:00:27,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:00:27,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:00:27,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:00:27,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:00:27,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:00:27,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:00:27,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:00:27,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:00:27,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:00:27,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:00:27,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:00:27,671 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:00:27,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:00:27,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:00:27,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:00:27,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:00:27,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:00:27,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:00:27,673 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:00:27,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:00:27,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:00:27,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:00:27,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:00:27,674 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:00:27,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:00:27,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:00:27,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:00:27,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:00:27,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:00:27,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:00:27,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:00:28,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:00:28,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:00:28,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:00:28,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:00:28,122 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:00:28,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2021-02-23 17:00:28,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96227db18/ea8851e1a30d4fcbab0387aefd3d4ded/FLAGa8d89d24f [2021-02-23 17:00:28,869 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:00:28,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2021-02-23 17:00:28,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96227db18/ea8851e1a30d4fcbab0387aefd3d4ded/FLAGa8d89d24f [2021-02-23 17:00:29,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96227db18/ea8851e1a30d4fcbab0387aefd3d4ded [2021-02-23 17:00:29,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:00:29,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:00:29,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:00:29,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:00:29,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:00:29,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ecb42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29, skipping insertion in model container [2021-02-23 17:00:29,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:00:29,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:00:29,600 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_product44.cil.c[15482,15495] [2021-02-23 17:00:29,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:00:29,632 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:00:29,711 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_product44.cil.c[15482,15495] [2021-02-23 17:00:29,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:00:29,787 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:00:29,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29 WrapperNode [2021-02-23 17:00:29,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:00:29,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:00:29,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:00:29,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:00:29,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (1/1) ... [2021-02-23 17:00:29,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:00:29,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:00:29,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:00:29,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:00:29,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (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 [2021-02-23 17:00:30,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:00:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:00:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 17:00:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:00:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:00:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 17:00:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 17:00:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 17:00:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 17:00:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 17:00:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 17:00:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 17:00:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 17:00:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 17:00:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 17:00:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 17:00:30,044 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 17:00:30,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 17:00:30,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 17:00:30,044 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-23 17:00:30,044 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 17:00:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 17:00:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 17:00:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 17:00:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 17:00:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 17:00:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 17:00:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 17:00:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 17:00:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 17:00:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 17:00:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 17:00:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 17:00:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:00:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 17:00:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 17:00:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 17:00:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 17:00:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 17:00:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 17:00:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 17:00:30,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:00:30,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:00:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:00:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:00:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:00:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 17:00:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 17:00:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 17:00:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 17:00:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:00:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 17:00:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 17:00:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 17:00:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 17:00:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 17:00:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:00:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 17:00:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 17:00:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:00:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 17:00:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 17:00:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:00:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 17:00:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 17:00:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 17:00:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 17:00:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 17:00:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 17:00:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 17:00:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 17:00:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 17:00:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 17:00:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 17:00:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 17:00:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 17:00:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 17:00:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 17:00:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 17:00:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 17:00:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 17:00:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 17:00:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 17:00:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 17:00:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 17:00:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 17:00:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 17:00:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-23 17:00:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 17:00:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 17:00:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 17:00:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 17:00:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:00:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:00:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:00:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:00:31,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:00:31,561 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 17:00:31,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:00:31 BoogieIcfgContainer [2021-02-23 17:00:31,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:00:31,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:00:31,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:00:31,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:00:31,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:00:29" (1/3) ... [2021-02-23 17:00:31,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e090a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:00:31, skipping insertion in model container [2021-02-23 17:00:31,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:29" (2/3) ... [2021-02-23 17:00:31,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e090a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:00:31, skipping insertion in model container [2021-02-23 17:00:31,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:00:31" (3/3) ... [2021-02-23 17:00:31,573 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2021-02-23 17:00:31,580 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:00:31,586 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:00:31,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:00:31,630 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:00:31,631 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:00:31,631 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:00:31,631 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:00:31,631 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:00:31,631 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:00:31,631 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:00:31,632 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:00:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2021-02-23 17:00:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 17:00:31,674 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:31,675 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] [2021-02-23 17:00:31,676 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:31,682 INFO L82 PathProgramCache]: Analyzing trace with hash -421456433, now seen corresponding path program 1 times [2021-02-23 17:00:31,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:31,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317006212] [2021-02-23 17:00:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:31,766 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:32,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,470 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:32,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:32,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:32,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:32,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:32,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 17:00:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:32,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:00:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:32,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:32,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:00:32,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317006212] [2021-02-23 17:00:32,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:32,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 17:00:32,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786303512] [2021-02-23 17:00:32,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 17:00:32,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:32,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 17:00:32,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:00:32,695 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2021-02-23 17:00:34,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:34,399 INFO L93 Difference]: Finished difference Result 500 states and 588 transitions. [2021-02-23 17:00:34,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 17:00:34,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 17:00:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:34,419 INFO L225 Difference]: With dead ends: 500 [2021-02-23 17:00:34,419 INFO L226 Difference]: Without dead ends: 311 [2021-02-23 17:00:34,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:00:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-02-23 17:00:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 267. [2021-02-23 17:00:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-23 17:00:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 287 transitions. [2021-02-23 17:00:34,593 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 287 transitions. Word has length 147 [2021-02-23 17:00:34,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:34,594 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 287 transitions. [2021-02-23 17:00:34,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 17:00:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 287 transitions. [2021-02-23 17:00:34,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 17:00:34,598 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:34,599 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] [2021-02-23 17:00:34,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:00:34,599 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:34,600 INFO L82 PathProgramCache]: Analyzing trace with hash -557085128, now seen corresponding path program 1 times [2021-02-23 17:00:34,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:34,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000080038] [2021-02-23 17:00:34,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:34,605 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:34,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:35,127 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:35,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:35,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:35,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:35,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:35,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:35,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:35,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:35,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:35,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:35,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:35,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 17:00:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:35,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:35,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:00:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:35,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:35,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:00:35,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000080038] [2021-02-23 17:00:35,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:35,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:00:35,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137865554] [2021-02-23 17:00:35,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:00:35,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:00:35,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:00:35,238 INFO L87 Difference]: Start difference. First operand 267 states and 287 transitions. Second operand 4 states. [2021-02-23 17:00:35,996 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:37,052 INFO L93 Difference]: Finished difference Result 403 states and 448 transitions. [2021-02-23 17:00:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 17:00:37,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 17:00:37,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:37,058 INFO L225 Difference]: With dead ends: 403 [2021-02-23 17:00:37,058 INFO L226 Difference]: Without dead ends: 294 [2021-02-23 17:00:37,060 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 [2021-02-23 17:00:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-02-23 17:00:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 257. [2021-02-23 17:00:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-02-23 17:00:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 274 transitions. [2021-02-23 17:00:37,179 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 274 transitions. Word has length 148 [2021-02-23 17:00:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:37,180 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 274 transitions. [2021-02-23 17:00:37,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:00:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 274 transitions. [2021-02-23 17:00:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 17:00:37,182 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:37,182 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] [2021-02-23 17:00:37,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:00:37,183 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:37,184 INFO L82 PathProgramCache]: Analyzing trace with hash -283718012, now seen corresponding path program 1 times [2021-02-23 17:00:37,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:37,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531084670] [2021-02-23 17:00:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:37,188 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:37,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:37,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:37,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,580 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:37,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 17:00:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 17:00:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 17:00:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:37,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:37,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:00:37,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531084670] [2021-02-23 17:00:37,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:37,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:00:37,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244389460] [2021-02-23 17:00:37,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:00:37,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:37,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:00:37,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:00:37,780 INFO L87 Difference]: Start difference. First operand 257 states and 274 transitions. Second operand 10 states. [2021-02-23 17:00:38,388 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:00:38,847 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:39,230 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 17:00:39,603 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:39,955 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:40,304 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:41,343 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:43,884 INFO L93 Difference]: Finished difference Result 696 states and 800 transitions. [2021-02-23 17:00:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 17:00:43,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 17:00:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:43,891 INFO L225 Difference]: With dead ends: 696 [2021-02-23 17:00:43,891 INFO L226 Difference]: Without dead ends: 554 [2021-02-23 17:00:43,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:00:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-02-23 17:00:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 447. [2021-02-23 17:00:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2021-02-23 17:00:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 491 transitions. [2021-02-23 17:00:44,152 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 491 transitions. Word has length 161 [2021-02-23 17:00:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:44,153 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 491 transitions. [2021-02-23 17:00:44,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:00:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 491 transitions. [2021-02-23 17:00:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 17:00:44,156 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:44,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:00:44,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:00:44,157 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:44,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1009952521, now seen corresponding path program 1 times [2021-02-23 17:00:44,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:44,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829485917] [2021-02-23 17:00:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:44,161 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:44,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:44,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:44,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:44,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:44,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:44,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:44,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:44,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:44,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:44,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,621 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:44,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:00:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:44,716 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:00:44,717 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:00:44,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:00:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 17:00:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:44,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:44,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 17:00:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:44,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:44,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:00:44,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829485917] [2021-02-23 17:00:44,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:44,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:00:44,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854044189] [2021-02-23 17:00:44,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:00:44,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:44,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:00:44,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:00:44,849 INFO L87 Difference]: Start difference. First operand 447 states and 491 transitions. Second operand 14 states. [2021-02-23 17:00:45,566 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:00:46,002 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:46,371 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:00:46,790 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:47,162 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:47,495 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:48,287 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:49,524 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:49,913 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:50,380 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:50,812 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:51,193 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:00:51,528 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:00:51,905 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:00:52,281 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:52,634 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:53,096 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:53,587 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:00:53,975 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:54,385 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:57,016 INFO L93 Difference]: Finished difference Result 1529 states and 1878 transitions. [2021-02-23 17:00:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 17:00:57,016 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 17:00:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:57,026 INFO L225 Difference]: With dead ends: 1529 [2021-02-23 17:00:57,026 INFO L226 Difference]: Without dead ends: 1197 [2021-02-23 17:00:57,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 17:00:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-02-23 17:00:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1058. [2021-02-23 17:00:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2021-02-23 17:00:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1216 transitions. [2021-02-23 17:00:57,505 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1216 transitions. Word has length 166 [2021-02-23 17:00:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:57,506 INFO L480 AbstractCegarLoop]: Abstraction has 1058 states and 1216 transitions. [2021-02-23 17:00:57,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:00:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1216 transitions. [2021-02-23 17:00:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 17:00:57,510 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:57,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:00:57,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:00:57,511 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1069399283, now seen corresponding path program 1 times [2021-02-23 17:00:57,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:57,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752714532] [2021-02-23 17:00:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:57,516 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:57,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:57,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:57,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:57,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:57,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:57,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:57,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:57,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:57,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:57,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:57,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:57,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:57,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:57,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:57,946 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:57,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:57,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:57,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:58,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:58,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:58,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:58,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:58,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:58,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:00:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:58,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:58,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 17:00:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:58,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 17:00:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:58,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:58,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 17:00:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:58,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:58,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:00:58,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752714532] [2021-02-23 17:00:58,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:58,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:00:58,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530482397] [2021-02-23 17:00:58,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:00:58,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:58,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:00:58,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:00:58,108 INFO L87 Difference]: Start difference. First operand 1058 states and 1216 transitions. Second operand 6 states. [2021-02-23 17:00:58,698 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:01:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:01:01,326 INFO L93 Difference]: Finished difference Result 2469 states and 2983 transitions. [2021-02-23 17:01:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:01:01,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 17:01:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:01:01,338 INFO L225 Difference]: With dead ends: 2469 [2021-02-23 17:01:01,338 INFO L226 Difference]: Without dead ends: 1526 [2021-02-23 17:01:01,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:01:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2021-02-23 17:01:02,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1423. [2021-02-23 17:01:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2021-02-23 17:01:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1647 transitions. [2021-02-23 17:01:02,016 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1647 transitions. Word has length 171 [2021-02-23 17:01:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:01:02,017 INFO L480 AbstractCegarLoop]: Abstraction has 1423 states and 1647 transitions. [2021-02-23 17:01:02,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:01:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1647 transitions. [2021-02-23 17:01:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 17:01:02,034 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:01:02,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:01:02,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:01:02,037 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:01:02,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:01:02,038 INFO L82 PathProgramCache]: Analyzing trace with hash -797583530, now seen corresponding path program 1 times [2021-02-23 17:01:02,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:01:02,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286578287] [2021-02-23 17:01:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY