/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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:43:43,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:43:43,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:43:43,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:43:43,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:43:43,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:43:43,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:43:43,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:43:43,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:43:43,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:43:43,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:43:43,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:43:43,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:43:43,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:43:43,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:43:43,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:43:43,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:43:43,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:43:43,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:43:43,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:43:43,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:43:43,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:43:43,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:43:43,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:43:43,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:43:43,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:43:43,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:43:43,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:43:43,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:43:43,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:43:43,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:43:43,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:43:43,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:43:43,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:43:43,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:43:43,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:43:43,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:43:43,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:43:43,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:43:43,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:43:43,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:43:43,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:43:43,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:43:43,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:43:43,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:43:43,501 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:43:43,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:43:43,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:43:43,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:43:43,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:43:43,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:43:43,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:43:43,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:43:43,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:43:43,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:43:43,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:43:43,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:43:43,505 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:43:43,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:43:43,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:43:43,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:43:43,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:43:43,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:43:43,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:43:43,507 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:43:43,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:43:43,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:43:43,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:43:43,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:43:43,917 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:43:43,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2021-02-21 19:43:44,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc1ca778/30239d16fff74472932ebbf5fe05dbaa/FLAGc467fb0a6 [2021-02-21 19:43:44,719 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:43:44,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2021-02-21 19:43:44,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc1ca778/30239d16fff74472932ebbf5fe05dbaa/FLAGc467fb0a6 [2021-02-21 19:43:45,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc1ca778/30239d16fff74472932ebbf5fe05dbaa [2021-02-21 19:43:45,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:43:45,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:43:45,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:43:45,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:43:45,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:43:45,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55818438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45, skipping insertion in model container [2021-02-21 19:43:45,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:43:45,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:43:45,589 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_product52.cil.c[18107,18120] [2021-02-21 19:43:45,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:43:45,618 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:43:45,772 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_product52.cil.c[18107,18120] [2021-02-21 19:43:45,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:43:45,817 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:43:45,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45 WrapperNode [2021-02-21 19:43:45,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:43:45,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:43:45,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:43:45,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:43:45,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (1/1) ... [2021-02-21 19:43:45,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:43:45,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:43:45,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:43:45,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:43:45,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:43:46,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:43:46,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:43:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:43:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:43:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:43:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:43:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:43:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:43:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:43:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:43:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:43:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:43:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:43:46,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:43:46,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:43:46,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:43:46,079 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:43:46,079 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:43:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:43:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:43:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:43:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:43:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:43:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:43:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:43:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:43:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:43:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:43:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:43:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:43:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:43:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:43:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:43:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:43:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:43:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:43:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:43:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:43:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:43:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:43:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:43:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:43:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:43:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:43:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:43:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:43:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:43:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:43:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:43:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:43:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:43:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:43:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:43:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:43:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:43:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:43:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:43:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:43:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:43:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:43:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:43:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:43:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:43:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:43:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:43:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:43:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:43:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:43:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:43:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:43:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:43:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:43:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:43:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:43:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:43:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:43:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:43:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:43:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:43:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:43:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:43:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:43:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:43:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:43:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:43:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:43:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:43:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:43:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:43:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:43:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:43:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:43:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:43:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:43:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:43:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:43:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:43:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:43:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:43:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:43:47,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:43:47,254 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:43:47,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:43:47 BoogieIcfgContainer [2021-02-21 19:43:47,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:43:47,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:43:47,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:43:47,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:43:47,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:43:45" (1/3) ... [2021-02-21 19:43:47,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcdcfa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:43:47, skipping insertion in model container [2021-02-21 19:43:47,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:45" (2/3) ... [2021-02-21 19:43:47,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcdcfa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:43:47, skipping insertion in model container [2021-02-21 19:43:47,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:43:47" (3/3) ... [2021-02-21 19:43:47,266 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2021-02-21 19:43:47,273 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:43:47,279 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:43:47,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:43:47,322 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:43:47,322 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:43:47,322 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:43:47,322 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:43:47,322 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:43:47,323 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:43:47,323 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:43:47,323 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:43:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2021-02-21 19:43:47,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:43:47,371 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:47,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:47,372 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1591078587, now seen corresponding path program 1 times [2021-02-21 19:43:47,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:47,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506422245] [2021-02-21 19:43:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:47,471 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,101 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:48,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:48,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:48,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:48,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:48,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:48,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:48,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:48,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:48,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:48,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:48,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:43:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:48,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:48,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:43:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:48,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:48,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:43:48,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506422245] [2021-02-21 19:43:48,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:48,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:43:48,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755857377] [2021-02-21 19:43:48,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:43:48,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:48,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:43:48,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:43:48,309 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2021-02-21 19:43:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:50,085 INFO L93 Difference]: Finished difference Result 518 states and 615 transitions. [2021-02-21 19:43:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:43:50,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:43:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:50,104 INFO L225 Difference]: With dead ends: 518 [2021-02-21 19:43:50,104 INFO L226 Difference]: Without dead ends: 320 [2021-02-21 19:43:50,110 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 [2021-02-21 19:43:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-21 19:43:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 276. [2021-02-21 19:43:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2021-02-21 19:43:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 300 transitions. [2021-02-21 19:43:50,294 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 300 transitions. Word has length 147 [2021-02-21 19:43:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:50,295 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 300 transitions. [2021-02-21 19:43:50,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:43:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 300 transitions. [2021-02-21 19:43:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:43:50,300 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:50,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:50,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:43:50,301 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:50,302 INFO L82 PathProgramCache]: Analyzing trace with hash -62814594, now seen corresponding path program 1 times [2021-02-21 19:43:50,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:50,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709685028] [2021-02-21 19:43:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:50,307 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:50,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:50,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,770 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:50,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:50,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:50,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:50,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:50,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:50,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:43:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:50,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:43:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:50,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:50,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:43:50,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709685028] [2021-02-21 19:43:50,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:50,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:43:50,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801970889] [2021-02-21 19:43:50,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:43:50,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:50,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:43:50,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:43:50,873 INFO L87 Difference]: Start difference. First operand 276 states and 300 transitions. Second operand 4 states. [2021-02-21 19:43:51,622 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:43:52,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:52,823 INFO L93 Difference]: Finished difference Result 424 states and 477 transitions. [2021-02-21 19:43:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:43:52,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:43:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:52,835 INFO L225 Difference]: With dead ends: 424 [2021-02-21 19:43:52,835 INFO L226 Difference]: Without dead ends: 303 [2021-02-21 19:43:52,838 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 [2021-02-21 19:43:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-21 19:43:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 266. [2021-02-21 19:43:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-02-21 19:43:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 287 transitions. [2021-02-21 19:43:52,965 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 287 transitions. Word has length 148 [2021-02-21 19:43:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:52,965 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 287 transitions. [2021-02-21 19:43:52,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:43:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 287 transitions. [2021-02-21 19:43:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:43:52,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:52,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:52,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:43:52,969 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:52,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1126937246, now seen corresponding path program 1 times [2021-02-21 19:43:52,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:52,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837907440] [2021-02-21 19:43:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:52,975 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:53,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:53,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:53,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,400 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:53,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:43:53,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:43:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:43:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:53,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:43:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:43:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:53,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:53,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:43:53,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837907440] [2021-02-21 19:43:53,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:53,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:43:53,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404748384] [2021-02-21 19:43:53,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:43:53,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:53,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:43:53,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:43:53,597 INFO L87 Difference]: Start difference. First operand 266 states and 287 transitions. Second operand 10 states. [2021-02-21 19:43:54,266 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:54,699 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:43:55,061 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:43:55,425 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:55,760 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:56,134 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:57,214 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:43:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:59,834 INFO L93 Difference]: Finished difference Result 723 states and 841 transitions. [2021-02-21 19:43:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:43:59,835 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:43:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:59,841 INFO L225 Difference]: With dead ends: 723 [2021-02-21 19:43:59,841 INFO L226 Difference]: Without dead ends: 572 [2021-02-21 19:43:59,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:43:59,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-02-21 19:44:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 477. [2021-02-21 19:44:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2021-02-21 19:44:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 533 transitions. [2021-02-21 19:44:00,069 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 533 transitions. Word has length 161 [2021-02-21 19:44:00,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:00,069 INFO L480 AbstractCegarLoop]: Abstraction has 477 states and 533 transitions. [2021-02-21 19:44:00,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:44:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 533 transitions. [2021-02-21 19:44:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:44:00,073 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:00,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:44:00,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:44:00,073 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:00,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:00,074 INFO L82 PathProgramCache]: Analyzing trace with hash -656084487, now seen corresponding path program 1 times [2021-02-21 19:44:00,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:00,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330285968] [2021-02-21 19:44:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:00,078 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:00,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:00,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:00,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:00,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:00,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:00,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:00,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:00,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:00,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:00,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,609 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:44:00,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:44:00,709 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:44:00,710 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:44:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:44:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:44:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:00,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:44:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:00,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:00,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:44:00,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330285968] [2021-02-21 19:44:00,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:00,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:44:00,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194424406] [2021-02-21 19:44:00,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:44:00,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:00,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:44:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:44:00,835 INFO L87 Difference]: Start difference. First operand 477 states and 533 transitions. Second operand 14 states. [2021-02-21 19:44:01,471 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:02,001 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:44:02,361 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:44:02,706 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:03,086 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:03,441 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:04,145 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:44:05,407 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:05,811 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:06,380 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:06,829 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:44:07,241 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:07,606 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:44:07,987 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:44:08,398 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:08,769 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:09,326 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:09,840 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:44:10,316 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:10,779 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:13,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:13,042 INFO L93 Difference]: Finished difference Result 1649 states and 2064 transitions. [2021-02-21 19:44:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:44:13,043 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:44:13,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:13,060 INFO L225 Difference]: With dead ends: 1649 [2021-02-21 19:44:13,060 INFO L226 Difference]: Without dead ends: 1287 [2021-02-21 19:44:13,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:44:13,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-02-21 19:44:13,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1148. [2021-02-21 19:44:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1148 states. [2021-02-21 19:44:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1354 transitions. [2021-02-21 19:44:13,701 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1354 transitions. Word has length 166 [2021-02-21 19:44:13,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:13,704 INFO L480 AbstractCegarLoop]: Abstraction has 1148 states and 1354 transitions. [2021-02-21 19:44:13,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:44:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1354 transitions. [2021-02-21 19:44:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:44:13,709 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:13,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:44:13,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:44:13,710 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:13,711 INFO L82 PathProgramCache]: Analyzing trace with hash 380205404, now seen corresponding path program 1 times [2021-02-21 19:44:13,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:13,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912940242] [2021-02-21 19:44:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:13,716 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:13,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:13,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:13,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:13,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:13,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:13,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:13,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:13,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:13,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:13,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:13,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:13,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:13,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:13,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,133 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:14,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:14,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:44:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:44:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:44:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:44:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:14,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:14,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:44:14,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912940242] [2021-02-21 19:44:14,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:14,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:44:14,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656406720] [2021-02-21 19:44:14,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:44:14,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:14,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:44:14,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:44:14,363 INFO L87 Difference]: Start difference. First operand 1148 states and 1354 transitions. Second operand 6 states. [2021-02-21 19:44:14,992 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:18,028 INFO L93 Difference]: Finished difference Result 2633 states and 3295 transitions. [2021-02-21 19:44:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:44:18,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:44:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:18,039 INFO L225 Difference]: With dead ends: 2633 [2021-02-21 19:44:18,039 INFO L226 Difference]: Without dead ends: 1600 [2021-02-21 19:44:18,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:44:18,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-02-21 19:44:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1473. [2021-02-21 19:44:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2021-02-21 19:44:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 1733 transitions. [2021-02-21 19:44:18,706 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 1733 transitions. Word has length 171 [2021-02-21 19:44:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:18,706 INFO L480 AbstractCegarLoop]: Abstraction has 1473 states and 1733 transitions. [2021-02-21 19:44:18,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:44:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 1733 transitions. [2021-02-21 19:44:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:44:18,715 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:18,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:44:18,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:44:18,716 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash 223386127, now seen corresponding path program 1 times [2021-02-21 19:44:18,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:18,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305989025] [2021-02-21 19:44:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:19,390 WARN L202 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2021-02-21 19:44:19,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:19,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291