/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_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:00:23,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:00:23,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:00:23,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:00:23,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:00:23,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:00:23,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:00:23,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:00:23,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:00:23,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:00:23,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:00:23,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:00:23,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:00:23,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:00:23,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:00:23,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:00:23,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:00:23,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:00:23,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:00:23,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:00:23,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:00:23,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:00:23,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:00:23,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:00:23,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:00:23,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:00:23,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:00:23,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:00:23,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:00:23,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:00:23,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:00:23,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:00:23,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:00:23,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:00:23,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:00:23,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:00:23,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:00:23,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:00:23,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:00:23,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:00:23,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:00:23,992 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 17:00:24,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:00:24,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:00:24,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:00:24,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:00:24,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:00:24,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:00:24,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:00:24,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:00:24,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:00:24,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:00:24,027 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:00:24,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:00:24,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:00:24,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:00:24,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:00:24,028 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:00:24,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:00:24,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:00:24,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:00:24,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:00:24,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:00:24,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:00:24,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:00:24,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:00:24,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:00:24,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:00:24,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:00:24,504 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:00:24,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2021-02-23 17:00:24,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c8d0566/bb5a20d9722548cbabda41bd3760f272/FLAG0f5a8fe53 [2021-02-23 17:00:25,343 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:00:25,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2021-02-23 17:00:25,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c8d0566/bb5a20d9722548cbabda41bd3760f272/FLAG0f5a8fe53 [2021-02-23 17:00:25,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c8d0566/bb5a20d9722548cbabda41bd3760f272 [2021-02-23 17:00:25,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:00:25,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:00:25,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:00:25,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:00:25,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:00:25,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:00:25" (1/1) ... [2021-02-23 17:00:25,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a730e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:25, skipping insertion in model container [2021-02-23 17:00:25,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:00:25" (1/1) ... [2021-02-23 17:00:25,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:00:25,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:00:26,148 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_product43.cil.c[4780,4793] [2021-02-23 17:00:26,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:00:26,297 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:00:26,330 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_product43.cil.c[4780,4793] [2021-02-23 17:00:26,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:00:26,440 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:00:26,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26 WrapperNode [2021-02-23 17:00:26,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:00:26,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:00:26,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:00:26,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:00:26,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (1/1) ... [2021-02-23 17:00:26,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (1/1) ... [2021-02-23 17:00:26,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (1/1) ... [2021-02-23 17:00:26,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (1/1) ... [2021-02-23 17:00:26,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (1/1) ... [2021-02-23 17:00:26,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (1/1) ... [2021-02-23 17:00:26,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (1/1) ... [2021-02-23 17:00:26,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:00:26,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:00:26,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:00:26,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:00:26,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (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 17:00:26,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:00:26,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:00:26,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 17:00:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:00:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 17:00:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 17:00:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 17:00:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 17:00:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-23 17:00:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 17:00:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 17:00:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 17:00:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 17:00:26,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 17:00:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 17:00:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 17:00:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 17:00:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 17:00:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 17:00:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 17:00:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 17:00:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:00:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 17:00:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 17:00:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 17:00:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 17:00:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 17:00:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 17:00:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 17:00:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 17:00:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 17:00:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 17:00:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 17:00:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 17:00:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 17:00:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 17:00:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 17:00:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 17:00:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 17:00:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:00:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:00:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:00:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:00:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:00:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:00:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 17:00:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 17:00:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 17:00:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 17:00:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 17:00:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 17:00:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 17:00:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 17:00:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 17:00:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 17:00:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 17:00:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 17:00:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 17:00:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 17:00:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 17:00:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:00:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 17:00:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 17:00:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 17:00:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-23 17:00:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 17:00:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 17:00:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 17:00:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 17:00:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 17:00:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 17:00:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 17:00:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 17:00:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:00:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 17:00:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 17:00:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 17:00:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 17:00:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 17:00:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 17:00:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 17:00:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:00:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 17:00:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 17:00:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:00:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 17:00:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 17:00:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:00:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 17:00:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 17:00:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 17:00:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:00:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:00:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:00:28,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:00:28,003 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 17:00:28,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:00:28 BoogieIcfgContainer [2021-02-23 17:00:28,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:00:28,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:00:28,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:00:28,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:00:28,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:00:25" (1/3) ... [2021-02-23 17:00:28,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102997db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:00:28, skipping insertion in model container [2021-02-23 17:00:28,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:00:26" (2/3) ... [2021-02-23 17:00:28,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102997db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:00:28, skipping insertion in model container [2021-02-23 17:00:28,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:00:28" (3/3) ... [2021-02-23 17:00:28,018 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2021-02-23 17:00:28,025 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:00:28,032 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:00:28,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:00:28,111 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:00:28,111 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:00:28,111 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:00:28,111 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:00:28,112 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:00:28,112 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:00:28,112 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:00:28,112 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:00:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2021-02-23 17:00:28,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 17:00:28,162 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:28,164 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 17:00:28,164 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:28,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1329130714, now seen corresponding path program 1 times [2021-02-23 17:00:28,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:28,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138480440] [2021-02-23 17:00:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:28,268 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:28,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:28,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:28,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:28,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:29,045 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:29,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:29,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:29,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:29,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:29,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:29,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:29,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:29,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:29,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:29,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:29,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 17:00:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:29,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:29,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:29,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:00:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:29,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:29,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:29,264 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 17:00:29,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138480440] [2021-02-23 17:00:29,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:29,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 17:00:29,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963401799] [2021-02-23 17:00:29,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 17:00:29,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:29,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 17:00:29,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:00:29,294 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 3 states. [2021-02-23 17:00:31,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:31,034 INFO L93 Difference]: Finished difference Result 491 states and 578 transitions. [2021-02-23 17:00:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 17:00:31,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 17:00:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:31,055 INFO L225 Difference]: With dead ends: 491 [2021-02-23 17:00:31,055 INFO L226 Difference]: Without dead ends: 306 [2021-02-23 17:00:31,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:00:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-23 17:00:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 263. [2021-02-23 17:00:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-23 17:00:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 283 transitions. [2021-02-23 17:00:31,231 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 283 transitions. Word has length 147 [2021-02-23 17:00:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:31,232 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 283 transitions. [2021-02-23 17:00:31,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 17:00:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 283 transitions. [2021-02-23 17:00:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 17:00:31,238 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:31,238 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 17:00:31,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:00:31,239 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:31,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:31,240 INFO L82 PathProgramCache]: Analyzing trace with hash -305967401, now seen corresponding path program 1 times [2021-02-23 17:00:31,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:31,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469448101] [2021-02-23 17:00:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:31,245 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:31,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:31,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,759 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:31,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:31,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:31,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:31,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:31,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:31,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 17:00:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:31,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:00:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:31,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:31,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:31,865 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 17:00:31,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469448101] [2021-02-23 17:00:31,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:31,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:00:31,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160144925] [2021-02-23 17:00:31,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:00:31,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:31,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:00:31,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:00:31,869 INFO L87 Difference]: Start difference. First operand 263 states and 283 transitions. Second operand 4 states. [2021-02-23 17:00:32,670 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:33,848 INFO L93 Difference]: Finished difference Result 398 states and 442 transitions. [2021-02-23 17:00:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 17:00:33,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 17:00:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:33,854 INFO L225 Difference]: With dead ends: 398 [2021-02-23 17:00:33,854 INFO L226 Difference]: Without dead ends: 289 [2021-02-23 17:00:33,858 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 17:00:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-23 17:00:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 253. [2021-02-23 17:00:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2021-02-23 17:00:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 270 transitions. [2021-02-23 17:00:33,974 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 270 transitions. Word has length 148 [2021-02-23 17:00:33,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:33,974 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 270 transitions. [2021-02-23 17:00:33,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:00:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 270 transitions. [2021-02-23 17:00:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 17:00:33,978 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:33,978 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 17:00:33,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:00:33,978 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:33,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash 153687360, now seen corresponding path program 1 times [2021-02-23 17:00:33,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:33,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435351173] [2021-02-23 17:00:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:33,984 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:34,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:34,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:34,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:34,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:34,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:34,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:34,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,507 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:00:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:34,626 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:00:34,629 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:00:34,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:00:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 17:00:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:34,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:34,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:34,701 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 17:00:34,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435351173] [2021-02-23 17:00:34,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:34,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:00:34,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891396339] [2021-02-23 17:00:34,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:00:34,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:34,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:00:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:00:34,704 INFO L87 Difference]: Start difference. First operand 253 states and 270 transitions. Second operand 9 states. [2021-02-23 17:00:35,523 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:00:35,967 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:36,348 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:00:36,744 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:37,155 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:37,553 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:38,741 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:41,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:41,168 INFO L93 Difference]: Finished difference Result 660 states and 749 transitions. [2021-02-23 17:00:41,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:00:41,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 17:00:41,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:41,179 INFO L225 Difference]: With dead ends: 660 [2021-02-23 17:00:41,179 INFO L226 Difference]: Without dead ends: 522 [2021-02-23 17:00:41,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:00:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-02-23 17:00:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 443. [2021-02-23 17:00:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2021-02-23 17:00:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 487 transitions. [2021-02-23 17:00:41,438 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 487 transitions. Word has length 157 [2021-02-23 17:00:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:41,439 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 487 transitions. [2021-02-23 17:00:41,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:00:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 487 transitions. [2021-02-23 17:00:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 17:00:41,443 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:41,444 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] [2021-02-23 17:00:41,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:00:41,444 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:41,445 INFO L82 PathProgramCache]: Analyzing trace with hash 281694197, now seen corresponding path program 1 times [2021-02-23 17:00:41,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:41,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524224453] [2021-02-23 17:00:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:41,450 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:41,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:41,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:41,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:41,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:41,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:41,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:41,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:41,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:41,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:41,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:41,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:41,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:41,918 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:42,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:42,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 17:00:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:42,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:42,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 17:00:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 17:00:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:42,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:42,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:42,184 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 17:00:42,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524224453] [2021-02-23 17:00:42,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:42,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:00:42,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176301299] [2021-02-23 17:00:42,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:00:42,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:42,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:00:42,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:00:42,188 INFO L87 Difference]: Start difference. First operand 443 states and 487 transitions. Second operand 6 states. [2021-02-23 17:00:42,890 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:00:44,968 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:45,614 INFO L93 Difference]: Finished difference Result 1081 states and 1258 transitions. [2021-02-23 17:00:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:00:45,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2021-02-23 17:00:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:45,622 INFO L225 Difference]: With dead ends: 1081 [2021-02-23 17:00:45,622 INFO L226 Difference]: Without dead ends: 753 [2021-02-23 17:00:45,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:00:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-02-23 17:00:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 637. [2021-02-23 17:00:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2021-02-23 17:00:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 701 transitions. [2021-02-23 17:00:45,991 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 701 transitions. Word has length 165 [2021-02-23 17:00:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:45,991 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 701 transitions. [2021-02-23 17:00:45,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:00:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 701 transitions. [2021-02-23 17:00:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 17:00:45,997 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:45,997 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 17:00:45,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:00:45,997 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:45,998 INFO L82 PathProgramCache]: Analyzing trace with hash 756069138, now seen corresponding path program 1 times [2021-02-23 17:00:45,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:45,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437781087] [2021-02-23 17:00:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:46,002 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:46,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:46,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:46,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:46,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:46,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:46,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:46,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:46,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:46,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:00:46,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,466 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:00:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:46,563 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:00:46,566 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:00:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:00:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 17:00:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:46,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:46,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 17:00:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:46,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:46,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:46,748 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 17:00:46,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437781087] [2021-02-23 17:00:46,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:46,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:00:46,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136796843] [2021-02-23 17:00:46,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:00:46,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:46,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:00:46,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:00:46,751 INFO L87 Difference]: Start difference. First operand 637 states and 701 transitions. Second operand 14 states. [2021-02-23 17:00:47,413 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:00:47,911 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:48,327 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:00:48,721 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:49,124 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:49,511 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:50,373 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:51,307 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:51,743 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:52,208 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:52,651 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:53,061 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:00:53,467 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:00:53,862 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:54,308 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:54,806 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:00:55,214 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:00:56,938 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:00:57,357 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:57,871 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:59,949 INFO L93 Difference]: Finished difference Result 2107 states and 2504 transitions. [2021-02-23 17:00:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 17:00:59,950 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 17:00:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:59,963 INFO L225 Difference]: With dead ends: 2107 [2021-02-23 17:00:59,963 INFO L226 Difference]: Without dead ends: 1585 [2021-02-23 17:00:59,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 17:00:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-02-23 17:01:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1466. [2021-02-23 17:01:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1466 states. [2021-02-23 17:01:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1648 transitions. [2021-02-23 17:01:00,799 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1648 transitions. Word has length 166 [2021-02-23 17:01:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:01:00,800 INFO L480 AbstractCegarLoop]: Abstraction has 1466 states and 1648 transitions. [2021-02-23 17:01:00,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:01:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1648 transitions. [2021-02-23 17:01:00,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 17:01:00,805 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:01:00,806 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 17:01:00,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:01:00,807 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:01:00,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:01:00,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1962504124, now seen corresponding path program 1 times [2021-02-23 17:01:00,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:01:00,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532017463] [2021-02-23 17:01:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:01:01,494 WARN L202 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 119 [2021-02-23 17:01:01,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:01:01,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289