/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_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:08:52,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:08:52,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:08:52,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:08:52,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:08:52,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:08:52,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:08:52,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:08:52,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:08:52,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:08:52,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:08:52,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:08:52,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:08:52,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:08:52,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:08:52,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:08:52,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:08:52,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:08:52,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:08:52,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:08:52,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:08:52,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:08:52,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:08:52,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:08:52,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:08:52,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:08:52,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:08:52,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:08:52,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:08:52,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:08:52,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:08:52,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:08:52,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:08:52,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:08:52,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:08:52,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:08:52,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:08:52,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:08:52,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:08:52,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:08:52,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:08:52,974 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 16:08:52,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:08:52,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:08:52,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:08:52,989 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:08:52,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:08:52,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:08:52,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:08:52,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:08:52,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:08:52,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:08:52,990 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:08:52,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:08:52,991 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:08:52,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:08:52,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:08:52,992 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:08:52,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:08:52,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:08:52,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:08:52,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:08:52,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:08:52,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:08:52,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:08:53,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:08:53,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:08:53,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:08:53,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:08:53,369 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:08:53,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2021-02-23 16:08:53,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d8844d3/c7a387ac2e13435eba7f5b5ef1decf0d/FLAGe5b159c41 [2021-02-23 16:08:54,188 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:08:54,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2021-02-23 16:08:54,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d8844d3/c7a387ac2e13435eba7f5b5ef1decf0d/FLAGe5b159c41 [2021-02-23 16:08:54,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d8844d3/c7a387ac2e13435eba7f5b5ef1decf0d [2021-02-23 16:08:54,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:08:54,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:08:54,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:08:54,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:08:54,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:08:54,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:08:54" (1/1) ... [2021-02-23 16:08:54,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49af5746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:54, skipping insertion in model container [2021-02-23 16:08:54,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:08:54" (1/1) ... [2021-02-23 16:08:54,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:08:54,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:08:54,761 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_spec1_product36.cil.c[1281,1294] [2021-02-23 16:08:54,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:08:54,903 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:08:54,933 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_spec1_product36.cil.c[1281,1294] [2021-02-23 16:08:55,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:08:55,103 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:08:55,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55 WrapperNode [2021-02-23 16:08:55,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:08:55,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:08:55,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:08:55,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:08:55,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (1/1) ... [2021-02-23 16:08:55,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (1/1) ... [2021-02-23 16:08:55,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (1/1) ... [2021-02-23 16:08:55,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (1/1) ... [2021-02-23 16:08:55,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (1/1) ... [2021-02-23 16:08:55,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (1/1) ... [2021-02-23 16:08:55,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (1/1) ... [2021-02-23 16:08:55,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:08:55,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:08:55,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:08:55,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:08:55,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (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 16:08:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:08:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:08:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:08:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:08:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:08:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:08:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:08:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:08:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:08:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:08:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:08:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:08:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:08:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:08:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:08:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:08:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:08:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:08:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:08:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:08:55,400 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:08:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:08:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:08:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:08:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:08:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:08:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:08:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:08:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:08:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:08:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:08:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:08:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:08:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:08:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:08:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:08:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:08:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:08:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:08:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:08:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:08:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:08:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:08:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:08:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:08:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:08:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:08:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:08:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:08:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:08:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:08:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:08:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:08:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:08:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:08:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:08:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:08:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:08:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:08:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:08:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:08:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:08:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:08:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:08:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:08:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:08:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:08:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:08:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:08:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:08:55,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:08:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:08:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:08:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:08:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:08:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:08:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:08:55,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:08:55,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:08:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:08:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:08:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:08:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:08:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:08:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:08:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:08:56,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:08:56,682 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:08:56,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:08:56 BoogieIcfgContainer [2021-02-23 16:08:56,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:08:56,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:08:56,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:08:56,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:08:56,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:08:54" (1/3) ... [2021-02-23 16:08:56,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42861d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:08:56, skipping insertion in model container [2021-02-23 16:08:56,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:55" (2/3) ... [2021-02-23 16:08:56,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42861d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:08:56, skipping insertion in model container [2021-02-23 16:08:56,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:08:56" (3/3) ... [2021-02-23 16:08:56,697 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2021-02-23 16:08:56,705 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:08:56,711 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:08:56,731 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:08:56,759 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:08:56,759 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:08:56,759 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:08:56,759 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:08:56,760 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:08:56,760 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:08:56,760 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:08:56,760 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:08:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2021-02-23 16:08:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:08:56,809 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:08:56,811 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 16:08:56,811 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:08:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:08:56,826 INFO L82 PathProgramCache]: Analyzing trace with hash -85306297, now seen corresponding path program 1 times [2021-02-23 16:08:56,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:08:56,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784019896] [2021-02-23 16:08:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:08:56,940 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:08:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:57,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,628 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:08:57,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:08:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:57,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:08:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:57,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:08:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:57,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:08:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:57,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:08:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:57,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:08:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:57,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:08:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:57,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:57,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:57,899 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 16:08:57,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784019896] [2021-02-23 16:08:57,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:08:57,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:08:57,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395899539] [2021-02-23 16:08:57,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:08:57,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:08:57,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:08:57,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:08:57,926 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 3 states. [2021-02-23 16:08:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:08:59,489 INFO L93 Difference]: Finished difference Result 454 states and 540 transitions. [2021-02-23 16:08:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:08:59,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:08:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:08:59,515 INFO L225 Difference]: With dead ends: 454 [2021-02-23 16:08:59,515 INFO L226 Difference]: Without dead ends: 287 [2021-02-23 16:08:59,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:08:59,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-23 16:08:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 245. [2021-02-23 16:08:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-23 16:08:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2021-02-23 16:08:59,659 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 147 [2021-02-23 16:08:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:08:59,660 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2021-02-23 16:08:59,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:08:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2021-02-23 16:08:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:08:59,667 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:08:59,667 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 16:08:59,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:08:59,668 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:08:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:08:59,668 INFO L82 PathProgramCache]: Analyzing trace with hash -756337341, now seen corresponding path program 1 times [2021-02-23 16:08:59,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:08:59,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751371211] [2021-02-23 16:08:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:08:59,673 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:08:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:59,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:59,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:59,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:59,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:08:59,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:59,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:00,101 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:00,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:00,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:00,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:00,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:00,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:00,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:00,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:00,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:00,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:00,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:00,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:00,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:00,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:09:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:00,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:00,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:09:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:00,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:00,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:00,204 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 16:09:00,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751371211] [2021-02-23 16:09:00,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:00,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:09:00,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613468035] [2021-02-23 16:09:00,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:09:00,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:00,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:09:00,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:09:00,207 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 4 states. [2021-02-23 16:09:00,955 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:01,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:01,847 INFO L93 Difference]: Finished difference Result 357 states and 400 transitions. [2021-02-23 16:09:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:09:01,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:09:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:01,852 INFO L225 Difference]: With dead ends: 357 [2021-02-23 16:09:01,852 INFO L226 Difference]: Without dead ends: 270 [2021-02-23 16:09:01,854 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 16:09:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-23 16:09:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-02-23 16:09:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-23 16:09:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 251 transitions. [2021-02-23 16:09:01,957 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 251 transitions. Word has length 148 [2021-02-23 16:09:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:01,958 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 251 transitions. [2021-02-23 16:09:01,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:09:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 251 transitions. [2021-02-23 16:09:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:09:01,961 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:01,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:01,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:09:01,961 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:01,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1952058394, now seen corresponding path program 1 times [2021-02-23 16:09:01,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:01,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051604557] [2021-02-23 16:09:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:01,966 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:02,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:02,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:02,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,346 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:02,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:09:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:02,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:09:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:09:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,534 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 16:09:02,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051604557] [2021-02-23 16:09:02,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:02,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:09:02,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258535789] [2021-02-23 16:09:02,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:09:02,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:02,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:09:02,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:09:02,537 INFO L87 Difference]: Start difference. First operand 235 states and 251 transitions. Second operand 10 states. [2021-02-23 16:09:03,262 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:03,674 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:04,042 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:09:04,438 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:04,800 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:05,181 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:06,212 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:08,397 INFO L93 Difference]: Finished difference Result 626 states and 727 transitions. [2021-02-23 16:09:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:09:08,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:09:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:08,404 INFO L225 Difference]: With dead ends: 626 [2021-02-23 16:09:08,404 INFO L226 Difference]: Without dead ends: 506 [2021-02-23 16:09:08,406 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 [2021-02-23 16:09:08,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-02-23 16:09:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 403. [2021-02-23 16:09:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-23 16:09:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 445 transitions. [2021-02-23 16:09:08,585 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 445 transitions. Word has length 161 [2021-02-23 16:09:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:08,585 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 445 transitions. [2021-02-23 16:09:08,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:09:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 445 transitions. [2021-02-23 16:09:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:09:08,588 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:08,588 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 16:09:08,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:09:08,589 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1305806755, now seen corresponding path program 1 times [2021-02-23 16:09:08,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:08,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455781582] [2021-02-23 16:09:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:08,593 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:08,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:08,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:08,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:08,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:08,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:08,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:08,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:08,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:08,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:08,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:08,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:08,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:08,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:08,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,045 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:09,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:09,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:09,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:09,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:09,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:09,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:09,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:09:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:09,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:09:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:09,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:09,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:09:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:09,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:09,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:09,225 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 16:09:09,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455781582] [2021-02-23 16:09:09,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:09,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:09:09,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662775734] [2021-02-23 16:09:09,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:09:09,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:09,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:09:09,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:09:09,228 INFO L87 Difference]: Start difference. First operand 403 states and 445 transitions. Second operand 9 states. [2021-02-23 16:09:09,891 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:11,377 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:11,766 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:12,190 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:12,577 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:12,939 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:13,264 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:13,606 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:14,111 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:15,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:15,201 INFO L93 Difference]: Finished difference Result 1089 states and 1301 transitions. [2021-02-23 16:09:15,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:09:15,201 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-23 16:09:15,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:15,208 INFO L225 Difference]: With dead ends: 1089 [2021-02-23 16:09:15,209 INFO L226 Difference]: Without dead ends: 801 [2021-02-23 16:09:15,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:09:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-02-23 16:09:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 652. [2021-02-23 16:09:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2021-02-23 16:09:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 731 transitions. [2021-02-23 16:09:15,496 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 731 transitions. Word has length 166 [2021-02-23 16:09:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:15,497 INFO L480 AbstractCegarLoop]: Abstraction has 652 states and 731 transitions. [2021-02-23 16:09:15,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:09:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 731 transitions. [2021-02-23 16:09:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:09:15,500 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:15,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:15,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:09:15,501 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:15,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1497435342, now seen corresponding path program 1 times [2021-02-23 16:09:15,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:15,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798306306] [2021-02-23 16:09:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:15,505 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,867 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:15,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:09:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:15,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:09:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:09:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:15,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:15,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:15,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:16,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:16,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:16,065 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 16:09:16,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798306306] [2021-02-23 16:09:16,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:16,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:09:16,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837497520] [2021-02-23 16:09:16,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:09:16,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:16,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:09:16,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:09:16,068 INFO L87 Difference]: Start difference. First operand 652 states and 731 transitions. Second operand 10 states. [2021-02-23 16:09:16,730 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:18,228 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:18,587 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:19,042 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:19,495 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:19,908 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:20,727 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:21,146 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:21,653 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:22,829 INFO L93 Difference]: Finished difference Result 1724 states and 2098 transitions. [2021-02-23 16:09:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:09:22,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-23 16:09:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:22,842 INFO L225 Difference]: With dead ends: 1724 [2021-02-23 16:09:22,842 INFO L226 Difference]: Without dead ends: 1187 [2021-02-23 16:09:22,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:09:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-02-23 16:09:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 942. [2021-02-23 16:09:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2021-02-23 16:09:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1078 transitions. [2021-02-23 16:09:23,241 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1078 transitions. Word has length 171 [2021-02-23 16:09:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:23,241 INFO L480 AbstractCegarLoop]: Abstraction has 942 states and 1078 transitions. [2021-02-23 16:09:23,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:09:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1078 transitions. [2021-02-23 16:09:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-23 16:09:23,246 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:23,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:23,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:09:23,247 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash 405362386, now seen corresponding path program 1 times [2021-02-23 16:09:23,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:23,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827373052] [2021-02-23 16:09:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:23,251 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,624 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:23,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:09:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:09:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:23,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:23,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:23,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:23,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-23 16:09:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:09:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,866 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 16:09:23,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827373052] [2021-02-23 16:09:23,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:23,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:09:23,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183892623] [2021-02-23 16:09:23,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:09:23,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:23,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:09:23,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:09:23,869 INFO L87 Difference]: Start difference. First operand 942 states and 1078 transitions. Second operand 11 states. [2021-02-23 16:09:25,607 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:26,022 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:26,484 WARN L202 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:09:26,921 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:27,349 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:27,735 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:29,952 INFO L93 Difference]: Finished difference Result 2373 states and 2974 transitions. [2021-02-23 16:09:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:09:29,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2021-02-23 16:09:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:29,966 INFO L225 Difference]: With dead ends: 2373 [2021-02-23 16:09:29,966 INFO L226 Difference]: Without dead ends: 1546 [2021-02-23 16:09:29,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:09:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-02-23 16:09:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 980. [2021-02-23 16:09:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2021-02-23 16:09:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1116 transitions. [2021-02-23 16:09:30,426 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1116 transitions. Word has length 199 [2021-02-23 16:09:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:30,427 INFO L480 AbstractCegarLoop]: Abstraction has 980 states and 1116 transitions. [2021-02-23 16:09:30,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:09:30,427 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1116 transitions. [2021-02-23 16:09:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-23 16:09:30,431 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:30,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:30,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:09:30,432 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:30,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1016878478, now seen corresponding path program 1 times [2021-02-23 16:09:30,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:30,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129435092] [2021-02-23 16:09:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:30,436 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:30,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:30,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,825 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:30,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:30,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:09:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:09:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:30,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:30,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:30,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:31,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:31,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:31,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:31,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:31,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:31,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:31,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:31,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-23 16:09:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:31,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:09:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:31,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:31,112 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 16:09:31,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129435092] [2021-02-23 16:09:31,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:31,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:09:31,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632072253] [2021-02-23 16:09:31,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:09:31,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:31,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:09:31,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:09:31,117 INFO L87 Difference]: Start difference. First operand 980 states and 1116 transitions. Second operand 14 states. [2021-02-23 16:09:31,888 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:32,294 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:32,685 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:33,060 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:33,404 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:34,530 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:34,921 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:35,344 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:35,781 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:36,159 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:38,037 INFO L93 Difference]: Finished difference Result 2455 states and 3115 transitions. [2021-02-23 16:09:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 16:09:38,039 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2021-02-23 16:09:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:38,051 INFO L225 Difference]: With dead ends: 2455 [2021-02-23 16:09:38,051 INFO L226 Difference]: Without dead ends: 1590 [2021-02-23 16:09:38,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-23 16:09:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-02-23 16:09:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1004. [2021-02-23 16:09:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2021-02-23 16:09:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1140 transitions. [2021-02-23 16:09:38,477 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1140 transitions. Word has length 199 [2021-02-23 16:09:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:38,477 INFO L480 AbstractCegarLoop]: Abstraction has 1004 states and 1140 transitions. [2021-02-23 16:09:38,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:09:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1140 transitions. [2021-02-23 16:09:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-23 16:09:38,482 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:38,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:38,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:09:38,482 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:38,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:38,483 INFO L82 PathProgramCache]: Analyzing trace with hash -808529707, now seen corresponding path program 1 times [2021-02-23 16:09:38,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:38,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929127080] [2021-02-23 16:09:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:38,486 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:38,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:38,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:38,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:38,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:09:38,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,860 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:09:38,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:09:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:09:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:38,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:38,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:38,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:38,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:39,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:39,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:39,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:39,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:39,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:39,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:39,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:39,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:39,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:39,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:39,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:39,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:39,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-23 16:09:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:39,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:39,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:39,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:09:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:39,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:39,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:39,095 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 16:09:39,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929127080] [2021-02-23 16:09:39,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:39,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 16:09:39,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111664822] [2021-02-23 16:09:39,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 16:09:39,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:39,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 16:09:39,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 16:09:39,098 INFO L87 Difference]: Start difference. First operand 1004 states and 1140 transitions. Second operand 8 states. [2021-02-23 16:09:39,739 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:40,509 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:44,123 INFO L93 Difference]: Finished difference Result 3932 states and 5021 transitions. [2021-02-23 16:09:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 16:09:44,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2021-02-23 16:09:44,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:44,146 INFO L225 Difference]: With dead ends: 3932 [2021-02-23 16:09:44,146 INFO L226 Difference]: Without dead ends: 3043 [2021-02-23 16:09:44,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-02-23 16:09:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-02-23 16:09:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2144. [2021-02-23 16:09:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2144 states. [2021-02-23 16:09:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 2468 transitions. [2021-02-23 16:09:45,195 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 2468 transitions. Word has length 199 [2021-02-23 16:09:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:45,196 INFO L480 AbstractCegarLoop]: Abstraction has 2144 states and 2468 transitions. [2021-02-23 16:09:45,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 16:09:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 2468 transitions. [2021-02-23 16:09:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-23 16:09:45,201 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:45,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:45,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:09:45,202 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:45,203 INFO L82 PathProgramCache]: Analyzing trace with hash -476325554, now seen corresponding path program 1 times [2021-02-23 16:09:45,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:45,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132668488] [2021-02-23 16:09:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:45,206 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:09:45,272 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:09:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:09:45,339 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:09:45,552 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:09:45,553 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:09:45,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:09:45,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:09:45 BoogieIcfgContainer [2021-02-23 16:09:45,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:09:45,595 INFO L168 Benchmark]: Toolchain (without parser) took 51075.22 ms. Allocated memory was 151.0 MB in the beginning and 889.2 MB in the end (delta: 738.2 MB). Free memory was 127.1 MB in the beginning and 356.4 MB in the end (delta: -229.4 MB). Peak memory consumption was 510.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:45,596 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:09:45,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 105.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:45,599 INFO L168 Benchmark]: Boogie Preprocessor took 126.86 ms. Allocated memory is still 151.0 MB. Free memory was 105.3 MB in the beginning and 101.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:45,599 INFO L168 Benchmark]: RCFGBuilder took 1433.89 ms. Allocated memory was 151.0 MB in the beginning and 197.1 MB in the end (delta: 46.1 MB). Free memory was 134.1 MB in the beginning and 127.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:45,609 INFO L168 Benchmark]: TraceAbstraction took 48903.44 ms. Allocated memory was 197.1 MB in the beginning and 889.2 MB in the end (delta: 692.1 MB). Free memory was 127.6 MB in the beginning and 356.4 MB in the end (delta: -228.8 MB). Peak memory consumption was 463.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:45,610 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 572.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 105.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 126.86 ms. Allocated memory is still 151.0 MB. Free memory was 105.3 MB in the beginning and 101.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1433.89 ms. Allocated memory was 151.0 MB in the beginning and 197.1 MB in the end (delta: 46.1 MB). Free memory was 134.1 MB in the beginning and 127.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48903.44 ms. Allocated memory was 197.1 MB in the beginning and 889.2 MB in the end (delta: 692.1 MB). Free memory was 127.6 MB in the beginning and 356.4 MB in the end (delta: -228.8 MB). Peak memory consumption was 463.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L241] int waterLevel = 1; [L242] int methaneLevelCritical = 0; [L612] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L835] int cleanupTimeShifts = 4; [L908] int retValue_acc ; [L909] int tmp ; [L913] FCALL select_helpers() [L914] FCALL select_features() [L915] CALL, EXPR valid_product() [L434] int retValue_acc ; [L437] retValue_acc = 1 [L438] return (retValue_acc); [L915] RET, EXPR valid_product() [L915] tmp = valid_product() [L917] COND TRUE \read(tmp) [L919] FCALL setup() [L920] CALL runTest() [L902] CALL test() [L337] int splverifierCounter ; [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L341] int tmp___2 ; [L344] splverifierCounter = 0 [L346] COND TRUE 1 [L348] COND TRUE splverifierCounter < 4 [L354] tmp = __VERIFIER_nondet_int() [L356] COND TRUE \read(tmp) [L358] CALL waterRise() [L259] COND TRUE waterLevel < 2 [L260] waterLevel = waterLevel + 1 [L358] RET waterRise() [L364] tmp___0 = __VERIFIER_nondet_int() [L366] COND TRUE \read(tmp___0) [L368] CALL changeMethaneLevel() [L271] COND FALSE !(\read(methaneLevelCritical)) [L274] methaneLevelCritical = 1 [L368] RET changeMethaneLevel() [L374] tmp___2 = __VERIFIER_nondet_int() [L376] COND TRUE \read(tmp___2) [L378] CALL startSystem() [L233] systemActive = 1 [L378] RET startSystem() [L393] CALL timeShift() [L70] COND FALSE !(\read(pumpRunning)) [L77] COND TRUE \read(systemActive) [L79] CALL processEnvironment() [L99] int tmp ; [L102] COND TRUE ! pumpRunning [L104] CALL, EXPR isHighWaterLevel() [L196] int retValue_acc ; [L197] int tmp ; [L198] int tmp___0 ; [L202] CALL, EXPR isHighWaterSensorDry() [L321] int retValue_acc ; [L324] COND FALSE !(waterLevel < 2) [L328] retValue_acc = 0 [L329] return (retValue_acc); [L202] RET, EXPR isHighWaterSensorDry() [L202] tmp = isHighWaterSensorDry() [L204] COND FALSE !(\read(tmp)) [L207] tmp___0 = 1 [L209] retValue_acc = tmp___0 [L210] return (retValue_acc); [L104] RET, EXPR isHighWaterLevel() [L104] tmp = isHighWaterLevel() [L106] COND TRUE \read(tmp) [L108] CALL activatePump() [L127] pumpRunning = 1 [L108] RET activatePump() [L79] RET processEnvironment() [L85] CALL __utac_acc__Specification1_spec__1() [L810] int tmp ; [L811] int tmp___0 ; [L815] CALL, EXPR isMethaneLevelCritical() [L280] int retValue_acc ; [L283] retValue_acc = methaneLevelCritical [L284] return (retValue_acc); [L815] RET, EXPR isMethaneLevelCritical() [L815] tmp = isMethaneLevelCritical() [L817] COND TRUE \read(tmp) [L819] CALL, EXPR isPumpRunning() [L151] int retValue_acc ; [L154] retValue_acc = pumpRunning [L155] return (retValue_acc); [L819] RET, EXPR isPumpRunning() [L819] tmp___0 = isPumpRunning() [L821] COND TRUE \read(tmp___0) [L823] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 39.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1908 SDtfs, 5193 SDslu, 4312 SDs, 0 SdLazy, 7948 SolverSat, 1866 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2144occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2625 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...