/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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:01:58,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:01:58,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:01:58,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:01:58,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:01:58,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:01:58,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:01:58,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:01:58,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:01:58,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:01:58,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:01:58,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:01:58,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:01:58,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:01:58,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:01:58,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:01:58,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:01:58,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:01:58,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:01:58,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:01:58,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:01:58,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:01:58,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:01:58,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:01:58,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:01:58,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:01:58,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:01:58,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:01:58,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:01:58,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:01:58,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:01:58,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:01:58,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:01:58,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:01:58,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:01:58,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:01:58,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:01:58,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:01:58,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:01:58,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:01:58,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:01:58,631 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 17:01:58,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:01:58,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:01:58,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:01:58,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:01:58,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:01:58,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:01:58,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:01:58,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:01:58,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:01:58,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:01:58,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:01:58,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:01:58,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:01:58,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:01:58,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:01:58,661 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:01:58,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:01:58,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:01:58,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:01:58,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:01:58,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:01:58,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:01:58,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:01:59,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:01:59,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:01:59,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:01:59,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:01:59,076 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:01:59,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2021-02-23 17:01:59,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82371a656/e04623cfadff474aa6f6b22b4a96d6db/FLAGb9426236e [2021-02-23 17:01:59,985 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:01:59,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2021-02-23 17:02:00,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82371a656/e04623cfadff474aa6f6b22b4a96d6db/FLAGb9426236e [2021-02-23 17:02:00,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82371a656/e04623cfadff474aa6f6b22b4a96d6db [2021-02-23 17:02:00,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:02:00,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:02:00,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:02:00,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:02:00,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:02:00,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bc9bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00, skipping insertion in model container [2021-02-23 17:02:00,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:02:00,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:02:00,658 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_product47.cil.c[16386,16399] [2021-02-23 17:02:00,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:02:00,716 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:02:00,812 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_product47.cil.c[16386,16399] [2021-02-23 17:02:00,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:02:00,865 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:02:00,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00 WrapperNode [2021-02-23 17:02:00,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:02:00,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:02:00,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:02:00,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:02:00,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (1/1) ... [2021-02-23 17:02:00,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:02:00,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:02:00,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:02:00,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:02:00,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (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 17:02:01,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:02:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:02:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 17:02:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:02:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 17:02:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 17:02:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 17:02:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 17:02:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:02:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 17:02:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 17:02:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 17:02:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 17:02:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 17:02:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-23 17:02:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 17:02:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 17:02:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 17:02:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 17:02:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 17:02:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 17:02:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 17:02:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 17:02:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 17:02:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 17:02:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 17:02:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 17:02:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 17:02:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:02:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 17:02:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 17:02:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 17:02:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 17:02:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 17:02:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 17:02:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 17:02:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 17:02:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 17:02:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 17:02:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 17:02:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 17:02:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:02:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:02:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:02:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:02:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:02:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 17:02:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 17:02:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 17:02:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 17:02:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 17:02:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 17:02:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 17:02:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 17:02:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 17:02:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 17:02:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 17:02:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 17:02:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 17:02:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:02:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 17:02:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 17:02:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 17:02:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 17:02:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 17:02:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 17:02:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 17:02:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 17:02:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:02:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 17:02:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 17:02:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 17:02:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 17:02:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 17:02:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-23 17:02:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 17:02:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 17:02:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 17:02:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 17:02:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 17:02:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:02:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 17:02:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 17:02:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:02:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 17:02:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 17:02:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:02:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 17:02:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 17:02:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 17:02:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 17:02:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 17:02:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 17:02:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:02:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:02:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:02:02,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:02:02,507 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 17:02:02,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:02:02 BoogieIcfgContainer [2021-02-23 17:02:02,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:02:02,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:02:02,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:02:02,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:02:02,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:02:00" (1/3) ... [2021-02-23 17:02:02,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c4fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:02:02, skipping insertion in model container [2021-02-23 17:02:02,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:02:00" (2/3) ... [2021-02-23 17:02:02,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c4fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:02:02, skipping insertion in model container [2021-02-23 17:02:02,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:02:02" (3/3) ... [2021-02-23 17:02:02,521 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2021-02-23 17:02:02,529 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:02:02,535 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:02:02,555 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:02:02,606 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:02:02,607 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:02:02,608 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:02:02,608 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:02:02,608 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:02:02,609 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:02:02,609 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:02:02,610 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:02:02,656 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states. [2021-02-23 17:02:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 17:02:02,706 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:02:02,708 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 17:02:02,709 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:02:02,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:02:02,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1873090485, now seen corresponding path program 1 times [2021-02-23 17:02:02,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:02:02,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096338123] [2021-02-23 17:02:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:02:02,862 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:02:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:03,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,631 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:02:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:02:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:03,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:02:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:03,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:02:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:03,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:02:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:03,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:02:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:03,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 17:02:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:03,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:02:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:03,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:03,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:03,946 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 17:02:03,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096338123] [2021-02-23 17:02:03,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:02:03,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 17:02:03,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145906287] [2021-02-23 17:02:03,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 17:02:03,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:02:03,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 17:02:03,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:02:03,974 INFO L87 Difference]: Start difference. First operand 327 states. Second operand 3 states. [2021-02-23 17:02:05,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:02:05,901 INFO L93 Difference]: Finished difference Result 517 states and 615 transitions. [2021-02-23 17:02:05,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 17:02:05,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 17:02:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:02:05,921 INFO L225 Difference]: With dead ends: 517 [2021-02-23 17:02:05,922 INFO L226 Difference]: Without dead ends: 320 [2021-02-23 17:02:05,928 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 17:02:05,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-23 17:02:06,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 275. [2021-02-23 17:02:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2021-02-23 17:02:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 300 transitions. [2021-02-23 17:02:06,105 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 300 transitions. Word has length 147 [2021-02-23 17:02:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:02:06,106 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 300 transitions. [2021-02-23 17:02:06,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 17:02:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 300 transitions. [2021-02-23 17:02:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 17:02:06,111 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:02:06,111 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 17:02:06,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:02:06,112 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:02:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:02:06,113 INFO L82 PathProgramCache]: Analyzing trace with hash -779544622, now seen corresponding path program 1 times [2021-02-23 17:02:06,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:02:06,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80273276] [2021-02-23 17:02:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:02:06,118 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:02:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:06,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:06,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,545 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:02:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:02:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:06,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:02:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:06,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:02:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:06,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:02:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:06,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:02:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:06,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 17:02:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:06,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:02:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:06,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:06,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:06,681 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 17:02:06,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80273276] [2021-02-23 17:02:06,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:02:06,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:02:06,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584377411] [2021-02-23 17:02:06,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:02:06,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:02:06,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:02:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:02:06,686 INFO L87 Difference]: Start difference. First operand 275 states and 300 transitions. Second operand 4 states. [2021-02-23 17:02:07,458 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:02:08,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:02:08,721 INFO L93 Difference]: Finished difference Result 427 states and 481 transitions. [2021-02-23 17:02:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 17:02:08,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 17:02:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:02:08,727 INFO L225 Difference]: With dead ends: 427 [2021-02-23 17:02:08,727 INFO L226 Difference]: Without dead ends: 303 [2021-02-23 17:02:08,729 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 17:02:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-23 17:02:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 265. [2021-02-23 17:02:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2021-02-23 17:02:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 287 transitions. [2021-02-23 17:02:08,866 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 287 transitions. Word has length 148 [2021-02-23 17:02:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:02:08,867 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 287 transitions. [2021-02-23 17:02:08,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:02:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 287 transitions. [2021-02-23 17:02:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 17:02:08,870 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:02:08,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:02:08,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:02:08,871 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:02:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:02:08,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1634729264, now seen corresponding path program 1 times [2021-02-23 17:02:08,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:02:08,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812661133] [2021-02-23 17:02:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:02:08,876 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:02:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:08,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:08,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:08,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:08,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:08,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:08,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:08,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:08,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:08,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:08,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:08,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:08,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:09,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:09,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:09,330 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:02:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:02:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:09,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:09,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:02:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:02:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:09,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:02:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:09,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:02:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:09,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:09,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:02:09,440 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:02:09,442 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:02:09,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:02:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:09,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:02:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:09,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 17:02:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:09,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:09,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:09,514 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 17:02:09,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812661133] [2021-02-23 17:02:09,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:02:09,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:02:09,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404562367] [2021-02-23 17:02:09,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:02:09,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:02:09,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:02:09,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:02:09,523 INFO L87 Difference]: Start difference. First operand 265 states and 287 transitions. Second operand 9 states. [2021-02-23 17:02:10,300 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:02:10,734 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:02:11,143 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:02:11,536 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:02:11,924 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:02:12,319 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:02:13,484 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:02:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:02:16,237 INFO L93 Difference]: Finished difference Result 700 states and 806 transitions. [2021-02-23 17:02:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:02:16,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 17:02:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:02:16,244 INFO L225 Difference]: With dead ends: 700 [2021-02-23 17:02:16,244 INFO L226 Difference]: Without dead ends: 550 [2021-02-23 17:02:16,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:02:16,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-02-23 17:02:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 479. [2021-02-23 17:02:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2021-02-23 17:02:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 537 transitions. [2021-02-23 17:02:16,470 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 537 transitions. Word has length 157 [2021-02-23 17:02:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:02:16,471 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 537 transitions. [2021-02-23 17:02:16,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:02:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 537 transitions. [2021-02-23 17:02:16,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 17:02:16,474 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:02:16,475 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 17:02:16,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:02:16,475 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:02:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:02:16,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1269645150, now seen corresponding path program 1 times [2021-02-23 17:02:16,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:02:16,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016040377] [2021-02-23 17:02:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:02:16,480 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:02:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:16,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:16,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:16,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:16,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:16,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:16,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:16,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:16,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:16,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:16,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:02:16,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:16,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,000 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:02:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:02:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:17,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:02:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:02:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:17,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:02:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:17,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:02:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:17,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:02:17,117 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:02:17,118 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:02:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:02:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:17,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:02:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:17,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 17:02:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:17,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:17,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 17:02:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:17,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:17,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:17,311 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 17:02:17,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016040377] [2021-02-23 17:02:17,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:02:17,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:02:17,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112029955] [2021-02-23 17:02:17,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:02:17,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:02:17,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:02:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:02:17,314 INFO L87 Difference]: Start difference. First operand 479 states and 537 transitions. Second operand 14 states. [2021-02-23 17:02:18,012 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:02:18,557 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:02:18,922 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:02:19,318 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:02:19,680 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:02:20,057 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:02:20,879 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:02:22,403 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:02:22,911 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:02:23,499 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:02:23,955 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:02:24,348 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:02:24,728 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:02:25,123 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:02:25,557 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:02:25,941 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:02:26,506 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:02:27,030 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:02:27,448 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:02:27,906 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:02:30,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:02:30,564 INFO L93 Difference]: Finished difference Result 1665 states and 2084 transitions. [2021-02-23 17:02:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 17:02:30,564 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 17:02:30,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:02:30,575 INFO L225 Difference]: With dead ends: 1665 [2021-02-23 17:02:30,575 INFO L226 Difference]: Without dead ends: 1301 [2021-02-23 17:02:30,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 17:02:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2021-02-23 17:02:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1162. [2021-02-23 17:02:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2021-02-23 17:02:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1374 transitions. [2021-02-23 17:02:31,182 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1374 transitions. Word has length 166 [2021-02-23 17:02:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:02:31,183 INFO L480 AbstractCegarLoop]: Abstraction has 1162 states and 1374 transitions. [2021-02-23 17:02:31,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:02:31,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1374 transitions. [2021-02-23 17:02:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 17:02:31,188 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:02:31,189 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 17:02:31,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:02:31,189 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:02:31,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:02:31,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1139355391, now seen corresponding path program 1 times [2021-02-23 17:02:31,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:02:31,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177705140] [2021-02-23 17:02:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:02:31,194 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:02:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:31,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:31,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:31,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:31,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:31,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:31,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,627 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:02:31,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:02:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:31,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:02:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:02:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:02:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:02:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:02:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:02:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 17:02:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 17:02:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 17:02:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:02:31,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:31,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:02:31,815 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 17:02:31,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177705140] [2021-02-23 17:02:31,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:02:31,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:02:31,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515146303] [2021-02-23 17:02:31,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:02:31,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:02:31,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:02:31,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:02:31,819 INFO L87 Difference]: Start difference. First operand 1162 states and 1374 transitions. Second operand 6 states. [2021-02-23 17:02:32,453 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:02:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:02:35,488 INFO L93 Difference]: Finished difference Result 2739 states and 3405 transitions. [2021-02-23 17:02:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:02:35,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 17:02:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:02:35,501 INFO L225 Difference]: With dead ends: 2739 [2021-02-23 17:02:35,501 INFO L226 Difference]: Without dead ends: 1692 [2021-02-23 17:02:35,507 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 17:02:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-02-23 17:02:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1569. [2021-02-23 17:02:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2021-02-23 17:02:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 1831 transitions. [2021-02-23 17:02:36,196 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 1831 transitions. Word has length 171 [2021-02-23 17:02:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:02:36,197 INFO L480 AbstractCegarLoop]: Abstraction has 1569 states and 1831 transitions. [2021-02-23 17:02:36,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:02:36,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 1831 transitions. [2021-02-23 17:02:36,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 17:02:36,202 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:02:36,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:02:36,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:02:36,204 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:02:36,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:02:36,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1984287646, now seen corresponding path program 1 times [2021-02-23 17:02:36,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:02:36,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216019243] [2021-02-23 17:02:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:02:36,898 WARN L202 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 117 [2021-02-23 17:02:36,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:02:36,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301