/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_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:50:45,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:50:45,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:50:45,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:50:45,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:50:45,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:50:45,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:50:45,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:50:45,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:50:45,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:50:45,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:50:45,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:50:45,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:50:45,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:50:45,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:50:45,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:50:45,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:50:45,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:50:45,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:50:45,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:50:45,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:50:45,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:50:45,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:50:45,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:50:45,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:50:45,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:50:45,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:50:45,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:50:45,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:50:45,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:50:45,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:50:45,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:50:45,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:50:45,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:50:45,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:50:45,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:50:45,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:50:45,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:50:45,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:50:45,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:50:45,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:50:45,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:50:45,376 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:50:45,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:50:45,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:50:45,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:50:45,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:50:45,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:50:45,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:50:45,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:50:45,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:50:45,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:50:45,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:50:45,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:50:45,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:50:45,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:50:45,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:50:45,385 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:50:45,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:50:45,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:50:45,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:50:45,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:50:45,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:50:45,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:50:45,387 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:50:45,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:50:45,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:50:45,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:50:45,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:50:45,865 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:50:45,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2021-02-21 18:50:45,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6e89ea1/4af7063a56314eedb468b0a283d19f66/FLAGe42342295 [2021-02-21 18:50:46,622 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:50:46,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2021-02-21 18:50:46,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6e89ea1/4af7063a56314eedb468b0a283d19f66/FLAGe42342295 [2021-02-21 18:50:46,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6e89ea1/4af7063a56314eedb468b0a283d19f66 [2021-02-21 18:50:46,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:50:46,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:50:46,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:50:46,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:50:46,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:50:46,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:50:46" (1/1) ... [2021-02-21 18:50:46,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7841d8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:46, skipping insertion in model container [2021-02-21 18:50:46,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:50:46" (1/1) ... [2021-02-21 18:50:46,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:50:47,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:50:47,344 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_spec2_product41.cil.c[16717,16730] [2021-02-21 18:50:47,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:50:47,378 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:50:47,541 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_spec2_product41.cil.c[16717,16730] [2021-02-21 18:50:47,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:50:47,599 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:50:47,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47 WrapperNode [2021-02-21 18:50:47,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:50:47,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:50:47,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:50:47,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:50:47,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (1/1) ... [2021-02-21 18:50:47,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (1/1) ... [2021-02-21 18:50:47,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (1/1) ... [2021-02-21 18:50:47,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (1/1) ... [2021-02-21 18:50:47,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (1/1) ... [2021-02-21 18:50:47,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (1/1) ... [2021-02-21 18:50:47,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (1/1) ... [2021-02-21 18:50:47,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:50:47,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:50:47,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:50:47,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:50:47,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:50:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:50:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:50:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:50:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:50:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:50:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:50:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:50:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:50:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:50:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:50:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:50:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:50:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:50:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:50:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:50:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:50:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:50:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:50:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:50:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:50:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:50:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:50:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:50:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:50:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:50:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:50:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:50:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:50:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:50:47,861 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:50:47,861 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:50:47,861 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:50:47,861 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:50:47,861 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:50:47,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:50:47,862 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:50:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:50:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:50:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:50:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:50:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:50:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:50:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:50:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:50:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:50:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:50:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:50:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:50:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:50:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:50:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:50:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:50:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:50:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:50:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:50:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:50:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:50:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:50:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:50:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:50:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:50:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:50:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:50:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:50:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:50:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:50:49,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:50:49,153 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:50:49,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:50:49 BoogieIcfgContainer [2021-02-21 18:50:49,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:50:49,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:50:49,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:50:49,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:50:49,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:50:46" (1/3) ... [2021-02-21 18:50:49,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194187b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:50:49, skipping insertion in model container [2021-02-21 18:50:49,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:50:47" (2/3) ... [2021-02-21 18:50:49,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194187b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:50:49, skipping insertion in model container [2021-02-21 18:50:49,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:50:49" (3/3) ... [2021-02-21 18:50:49,166 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2021-02-21 18:50:49,173 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:50:49,179 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:50:49,200 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:50:49,226 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:50:49,226 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:50:49,226 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:50:49,227 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:50:49,227 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:50:49,227 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:50:49,227 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:50:49,227 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:50:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2021-02-21 18:50:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-21 18:50:49,272 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:50:49,274 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] [2021-02-21 18:50:49,274 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:50:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:50:49,281 INFO L82 PathProgramCache]: Analyzing trace with hash 219928465, now seen corresponding path program 1 times [2021-02-21 18:50:49,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:50:49,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888861932] [2021-02-21 18:50:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:50:49,367 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:50:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:49,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:49,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:49,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:49,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,076 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:50:50,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:50:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:50,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:50,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:50:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:50,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:50,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:50:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:50,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:50,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:50:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:50,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:50,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:50:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:50,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:50,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:50:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:50,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:50,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:50:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:50,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:50,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:50:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:50,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:50,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:50:50,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888861932] [2021-02-21 18:50:50,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:50:50,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:50:50,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160900993] [2021-02-21 18:50:50,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:50:50,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:50:50,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:50:50,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:50:50,400 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 4 states. [2021-02-21 18:50:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:50:51,886 INFO L93 Difference]: Finished difference Result 474 states and 558 transitions. [2021-02-21 18:50:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 18:50:51,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-21 18:50:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:50:51,920 INFO L225 Difference]: With dead ends: 474 [2021-02-21 18:50:51,921 INFO L226 Difference]: Without dead ends: 305 [2021-02-21 18:50:51,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:50:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-21 18:50:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 258. [2021-02-21 18:50:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2021-02-21 18:50:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 279 transitions. [2021-02-21 18:50:52,097 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 279 transitions. Word has length 153 [2021-02-21 18:50:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:50:52,098 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 279 transitions. [2021-02-21 18:50:52,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:50:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 279 transitions. [2021-02-21 18:50:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-21 18:50:52,103 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:50:52,103 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] [2021-02-21 18:50:52,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:50:52,103 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:50:52,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:50:52,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1788341931, now seen corresponding path program 1 times [2021-02-21 18:50:52,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:50:52,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405689041] [2021-02-21 18:50:52,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:50:52,109 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:50:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:52,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,580 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:50:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:50:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:50:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:50:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:50:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:50:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:50:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 18:50:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:50:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:52,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:52,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:50:52,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405689041] [2021-02-21 18:50:52,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:50:52,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 18:50:52,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963866737] [2021-02-21 18:50:52,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 18:50:52,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:50:52,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 18:50:52,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:50:52,704 INFO L87 Difference]: Start difference. First operand 258 states and 279 transitions. Second operand 5 states. [2021-02-21 18:50:53,496 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:50:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:50:54,553 INFO L93 Difference]: Finished difference Result 402 states and 452 transitions. [2021-02-21 18:50:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 18:50:54,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-21 18:50:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:50:54,559 INFO L225 Difference]: With dead ends: 402 [2021-02-21 18:50:54,559 INFO L226 Difference]: Without dead ends: 294 [2021-02-21 18:50:54,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:50:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-02-21 18:50:54,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 248. [2021-02-21 18:50:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 18:50:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 266 transitions. [2021-02-21 18:50:54,658 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 266 transitions. Word has length 154 [2021-02-21 18:50:54,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:50:54,659 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 266 transitions. [2021-02-21 18:50:54,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 18:50:54,660 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 266 transitions. [2021-02-21 18:50:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-02-21 18:50:54,662 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:50:54,662 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] [2021-02-21 18:50:54,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:50:54,663 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:50:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:50:54,663 INFO L82 PathProgramCache]: Analyzing trace with hash -349760789, now seen corresponding path program 1 times [2021-02-21 18:50:54,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:50:54,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425498036] [2021-02-21 18:50:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:50:54,668 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:50:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:54,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:54,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:54,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:54,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:54,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:54,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:54,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:54,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:50:54,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:54,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,149 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:50:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:50:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:55,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:50:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:50:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:55,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:50:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:55,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:50:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:55,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:50:55,281 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:50:55,284 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:50:55,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:50:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:55,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:50:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:55,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:50:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:55,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:50:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:55,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:55,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:50:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:50:55,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425498036] [2021-02-21 18:50:55,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:50:55,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:50:55,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097054899] [2021-02-21 18:50:55,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:50:55,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:50:55,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:50:55,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:50:55,371 INFO L87 Difference]: Start difference. First operand 248 states and 266 transitions. Second operand 10 states. [2021-02-21 18:50:56,121 WARN L202 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:50:56,632 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:50:56,987 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:50:57,359 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:50:57,735 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:50:58,113 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:50:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:50:59,652 INFO L93 Difference]: Finished difference Result 422 states and 478 transitions. [2021-02-21 18:50:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:50:59,653 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2021-02-21 18:50:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:50:59,659 INFO L225 Difference]: With dead ends: 422 [2021-02-21 18:50:59,659 INFO L226 Difference]: Without dead ends: 294 [2021-02-21 18:50:59,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:50:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-02-21 18:50:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 248. [2021-02-21 18:50:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 18:50:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 265 transitions. [2021-02-21 18:50:59,797 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 265 transitions. Word has length 163 [2021-02-21 18:50:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:50:59,799 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 265 transitions. [2021-02-21 18:50:59,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:50:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 265 transitions. [2021-02-21 18:50:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 18:50:59,804 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:50:59,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:50:59,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:50:59,805 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:50:59,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:50:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash -337129330, now seen corresponding path program 1 times [2021-02-21 18:50:59,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:50:59,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902610365] [2021-02-21 18:50:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:50:59,814 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:50:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:50:59,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:59,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:59,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:59,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:59,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:59,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:59,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:59,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:59,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:59,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:50:59,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:50:59,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,363 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:00,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:51:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:00,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 18:51:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 18:51:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:00,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:00,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:00,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902610365] [2021-02-21 18:51:00,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:00,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:51:00,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108337171] [2021-02-21 18:51:00,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:51:00,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:00,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:51:00,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:51:00,592 INFO L87 Difference]: Start difference. First operand 248 states and 265 transitions. Second operand 7 states. [2021-02-21 18:51:01,283 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:02,922 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:03,769 INFO L93 Difference]: Finished difference Result 552 states and 633 transitions. [2021-02-21 18:51:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 18:51:03,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2021-02-21 18:51:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:03,773 INFO L225 Difference]: With dead ends: 552 [2021-02-21 18:51:03,773 INFO L226 Difference]: Without dead ends: 424 [2021-02-21 18:51:03,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-02-21 18:51:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-02-21 18:51:03,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 353. [2021-02-21 18:51:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2021-02-21 18:51:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 382 transitions. [2021-02-21 18:51:03,931 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 382 transitions. Word has length 171 [2021-02-21 18:51:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:03,932 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 382 transitions. [2021-02-21 18:51:03,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:51:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 382 transitions. [2021-02-21 18:51:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-02-21 18:51:03,935 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:03,935 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] [2021-02-21 18:51:03,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:51:03,936 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:03,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:03,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1594685458, now seen corresponding path program 1 times [2021-02-21 18:51:03,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:03,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089913741] [2021-02-21 18:51:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:03,940 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:04,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:04,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,345 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:04,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:04,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:51:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:04,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:04,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:51:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:04,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:04,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:51:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-21 18:51:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-21 18:51:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:04,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:04,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:04,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089913741] [2021-02-21 18:51:04,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:04,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 18:51:04,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020844832] [2021-02-21 18:51:04,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 18:51:04,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:04,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 18:51:04,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-21 18:51:04,646 INFO L87 Difference]: Start difference. First operand 353 states and 382 transitions. Second operand 13 states. [2021-02-21 18:51:05,347 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:05,706 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:51:06,046 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:06,420 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:06,778 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:07,749 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:08,129 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:08,517 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:08,893 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:09,251 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:10,407 INFO L93 Difference]: Finished difference Result 662 states and 760 transitions. [2021-02-21 18:51:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:51:10,407 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2021-02-21 18:51:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:10,411 INFO L225 Difference]: With dead ends: 662 [2021-02-21 18:51:10,411 INFO L226 Difference]: Without dead ends: 429 [2021-02-21 18:51:10,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-21 18:51:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-02-21 18:51:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 359. [2021-02-21 18:51:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2021-02-21 18:51:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 388 transitions. [2021-02-21 18:51:10,580 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 388 transitions. Word has length 195 [2021-02-21 18:51:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:10,581 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 388 transitions. [2021-02-21 18:51:10,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 18:51:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 388 transitions. [2021-02-21 18:51:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-02-21 18:51:10,584 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:10,584 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] [2021-02-21 18:51:10,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:51:10,585 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:10,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1278040974, now seen corresponding path program 1 times [2021-02-21 18:51:10,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:10,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641317037] [2021-02-21 18:51:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:10,589 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:10,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:10,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:10,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:10,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:10,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:10,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:10,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:10,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:10,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:10,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:10,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:10,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:10,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:10,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:10,987 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:51:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:51:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:51:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-21 18:51:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:11,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-21 18:51:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:11,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:11,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:11,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641317037] [2021-02-21 18:51:11,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:11,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:51:11,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488967189] [2021-02-21 18:51:11,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:51:11,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:11,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:51:11,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:51:11,227 INFO L87 Difference]: Start difference. First operand 359 states and 388 transitions. Second operand 10 states. [2021-02-21 18:51:11,855 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:13,333 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:13,725 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:14,186 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:14,554 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:15,307 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:15,678 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:16,035 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:16,508 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:17,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:17,530 INFO L93 Difference]: Finished difference Result 901 states and 1048 transitions. [2021-02-21 18:51:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 18:51:17,530 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2021-02-21 18:51:17,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:17,536 INFO L225 Difference]: With dead ends: 901 [2021-02-21 18:51:17,536 INFO L226 Difference]: Without dead ends: 662 [2021-02-21 18:51:17,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-21 18:51:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-02-21 18:51:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 552. [2021-02-21 18:51:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2021-02-21 18:51:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 602 transitions. [2021-02-21 18:51:17,786 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 602 transitions. Word has length 195 [2021-02-21 18:51:17,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:17,787 INFO L480 AbstractCegarLoop]: Abstraction has 552 states and 602 transitions. [2021-02-21 18:51:17,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:51:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 602 transitions. [2021-02-21 18:51:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:51:17,791 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:17,791 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] [2021-02-21 18:51:17,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:51:17,792 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1563246803, now seen corresponding path program 1 times [2021-02-21 18:51:17,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:17,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634208055] [2021-02-21 18:51:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:17,796 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:17,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:17,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:17,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:17,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:17,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:17,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:17,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:17,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:17,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:17,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,198 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:51:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:18,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:51:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:51:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-21 18:51:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:51:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:18,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:18,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634208055] [2021-02-21 18:51:18,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:18,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:51:18,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888750103] [2021-02-21 18:51:18,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:51:18,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:18,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:51:18,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:51:18,460 INFO L87 Difference]: Start difference. First operand 552 states and 602 transitions. Second operand 11 states. [2021-02-21 18:51:19,102 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:20,835 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:21,200 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:21,655 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:22,800 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:23,178 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:23,590 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:23,974 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:24,331 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:24,742 INFO L93 Difference]: Finished difference Result 1155 states and 1330 transitions. [2021-02-21 18:51:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-21 18:51:24,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2021-02-21 18:51:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:24,754 INFO L225 Difference]: With dead ends: 1155 [2021-02-21 18:51:24,754 INFO L226 Difference]: Without dead ends: 723 [2021-02-21 18:51:24,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-02-21 18:51:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-02-21 18:51:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 550. [2021-02-21 18:51:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2021-02-21 18:51:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 598 transitions. [2021-02-21 18:51:25,081 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 598 transitions. Word has length 200 [2021-02-21 18:51:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:25,082 INFO L480 AbstractCegarLoop]: Abstraction has 550 states and 598 transitions. [2021-02-21 18:51:25,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:51:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 598 transitions. [2021-02-21 18:51:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-21 18:51:25,086 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:25,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:25,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:51:25,087 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1123527417, now seen corresponding path program 1 times [2021-02-21 18:51:25,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:25,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728458487] [2021-02-21 18:51:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:25,092 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,449 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:51:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:25,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:25,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:25,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:25,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:25,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:51:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:51:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:51:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-21 18:51:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-21 18:51:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:25,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:25,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:25,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728458487] [2021-02-21 18:51:25,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:25,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:51:25,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957184590] [2021-02-21 18:51:25,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:51:25,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:25,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:51:25,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:51:25,691 INFO L87 Difference]: Start difference. First operand 550 states and 598 transitions. Second operand 11 states. [2021-02-21 18:51:27,108 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:27,489 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:51:27,896 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-21 18:51:28,271 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:28,655 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:29,004 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:30,459 INFO L93 Difference]: Finished difference Result 1167 states and 1363 transitions. [2021-02-21 18:51:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:51:30,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 223 [2021-02-21 18:51:30,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:30,465 INFO L225 Difference]: With dead ends: 1167 [2021-02-21 18:51:30,465 INFO L226 Difference]: Without dead ends: 737 [2021-02-21 18:51:30,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:51:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-02-21 18:51:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 566. [2021-02-21 18:51:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2021-02-21 18:51:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 614 transitions. [2021-02-21 18:51:30,701 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 614 transitions. Word has length 223 [2021-02-21 18:51:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:30,701 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 614 transitions. [2021-02-21 18:51:30,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:51:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 614 transitions. [2021-02-21 18:51:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-21 18:51:30,705 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:30,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:30,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:51:30,706 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:30,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:30,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1942855062, now seen corresponding path program 1 times [2021-02-21 18:51:30,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:30,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423002637] [2021-02-21 18:51:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:30,710 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:30,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:30,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:30,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:30,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:51:30,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,054 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:31,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:51:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:51:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:51:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:31,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:51:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:51:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-21 18:51:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-21 18:51:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:31,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:31,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:31,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423002637] [2021-02-21 18:51:31,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:31,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:51:31,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433160724] [2021-02-21 18:51:31,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:51:31,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:31,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:51:31,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:51:31,304 INFO L87 Difference]: Start difference. First operand 566 states and 614 transitions. Second operand 8 states. [2021-02-21 18:51:31,917 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:32,690 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:35,332 INFO L93 Difference]: Finished difference Result 1638 states and 1956 transitions. [2021-02-21 18:51:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 18:51:35,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2021-02-21 18:51:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:35,343 INFO L225 Difference]: With dead ends: 1638 [2021-02-21 18:51:35,343 INFO L226 Difference]: Without dead ends: 1192 [2021-02-21 18:51:35,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:51:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-02-21 18:51:35,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 960. [2021-02-21 18:51:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2021-02-21 18:51:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1070 transitions. [2021-02-21 18:51:35,949 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1070 transitions. Word has length 223 [2021-02-21 18:51:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:35,949 INFO L480 AbstractCegarLoop]: Abstraction has 960 states and 1070 transitions. [2021-02-21 18:51:35,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:51:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1070 transitions. [2021-02-21 18:51:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-02-21 18:51:35,952 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:35,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:35,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:51:35,953 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:35,954 INFO L82 PathProgramCache]: Analyzing trace with hash -945017396, now seen corresponding path program 1 times [2021-02-21 18:51:35,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:35,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795674497] [2021-02-21 18:51:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:35,957 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:36,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:36,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:36,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,348 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:36,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:51:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:51:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:36,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:51:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:51:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:51:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,561 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-21 18:51:36,562 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-21 18:51:36,588 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-21 18:51:36,590 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-21 18:51:36,618 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 18:51:36,619 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 18:51:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:36,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:36,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:36,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:36,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:51:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-02-21 18:51:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-02-21 18:51:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:36,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:36,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:36,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795674497] [2021-02-21 18:51:36,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:36,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-21 18:51:36,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933281229] [2021-02-21 18:51:36,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-21 18:51:36,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:36,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-21 18:51:36,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:51:36,847 INFO L87 Difference]: Start difference. First operand 960 states and 1070 transitions. Second operand 21 states. [2021-02-21 18:51:37,549 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:38,061 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:38,474 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-02-21 18:51:38,867 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:39,257 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:51:39,629 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:40,731 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:42,151 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:42,591 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:51:43,079 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:43,523 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:43,928 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:51:44,351 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:51:44,749 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:45,175 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:51:45,633 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:46,144 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:51:46,561 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:47,041 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:51:47,906 WARN L202 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2021-02-21 18:51:48,841 WARN L202 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 211 [2021-02-21 18:51:49,661 WARN L202 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2021-02-21 18:51:52,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:52,037 INFO L93 Difference]: Finished difference Result 1984 states and 2297 transitions. [2021-02-21 18:51:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-02-21 18:51:52,038 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 228 [2021-02-21 18:51:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:52,045 INFO L225 Difference]: With dead ends: 1984 [2021-02-21 18:51:52,045 INFO L226 Difference]: Without dead ends: 1144 [2021-02-21 18:51:52,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=726, Invalid=3056, Unknown=0, NotChecked=0, Total=3782 [2021-02-21 18:51:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-02-21 18:51:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 923. [2021-02-21 18:51:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2021-02-21 18:51:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1017 transitions. [2021-02-21 18:51:52,474 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1017 transitions. Word has length 228 [2021-02-21 18:51:52,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:52,475 INFO L480 AbstractCegarLoop]: Abstraction has 923 states and 1017 transitions. [2021-02-21 18:51:52,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-21 18:51:52,475 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1017 transitions. [2021-02-21 18:51:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-02-21 18:51:52,479 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:52,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:52,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:51:52,480 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:52,481 INFO L82 PathProgramCache]: Analyzing trace with hash 387000743, now seen corresponding path program 1 times [2021-02-21 18:51:52,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:52,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097580962] [2021-02-21 18:51:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:52,822 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-21 18:51:52,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-02-21 18:51:53,089 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-21 18:51:53,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-02-21 18:51:53,372 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-21 18:51:53,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-02-21 18:51:53,652 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-21 18:51:53,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-02-21 18:51:53,933 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-21 18:51:53,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-02-21 18:51:54,214 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-21 18:51:54,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:54,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-02-21 18:51:54,480 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-21 18:51:54,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:54,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-02-21 18:51:54,757 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-21 18:51:54,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:54,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-02-21 18:51:54,765 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 18:51:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:51:55,005 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:51:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:51:55,202 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:51:55,462 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:51:55,462 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:51:55,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 18:51:55,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:51:55 BoogieIcfgContainer [2021-02-21 18:51:55,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:51:55,524 INFO L168 Benchmark]: Toolchain (without parser) took 68567.59 ms. Allocated memory was 174.1 MB in the beginning and 679.5 MB in the end (delta: 505.4 MB). Free memory was 150.0 MB in the beginning and 319.2 MB in the end (delta: -169.2 MB). Peak memory consumption was 337.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:51:55,524 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 174.1 MB. Free memory is still 148.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:51:55,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.96 ms. Allocated memory is still 174.1 MB. Free memory was 148.8 MB in the beginning and 127.9 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:51:55,524 INFO L168 Benchmark]: Boogie Preprocessor took 140.97 ms. Allocated memory is still 174.1 MB. Free memory was 127.8 MB in the beginning and 123.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:51:55,525 INFO L168 Benchmark]: RCFGBuilder took 1413.37 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 123.8 MB in the beginning and 186.4 MB in the end (delta: -62.6 MB). Peak memory consumption was 68.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:51:55,525 INFO L168 Benchmark]: TraceAbstraction took 66364.46 ms. Allocated memory was 209.7 MB in the beginning and 679.5 MB in the end (delta: 469.8 MB). Free memory was 185.9 MB in the beginning and 319.2 MB in the end (delta: -133.3 MB). Peak memory consumption was 336.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:51:55,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 174.1 MB. Free memory is still 148.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 628.96 ms. Allocated memory is still 174.1 MB. Free memory was 148.8 MB in the beginning and 127.9 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 140.97 ms. Allocated memory is still 174.1 MB. Free memory was 127.8 MB in the beginning and 123.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1413.37 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 123.8 MB in the beginning and 186.4 MB in the end (delta: -62.6 MB). Peak memory consumption was 68.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 66364.46 ms. Allocated memory was 209.7 MB in the beginning and 679.5 MB in the end (delta: 469.8 MB). Free memory was 185.9 MB in the beginning and 319.2 MB in the end (delta: -133.3 MB). Peak memory consumption was 336.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 832]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L45] int methAndRunningLastTime ; [L253] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L457] int pumpRunning = 0; [L458] int systemActive = 1; [L630] int waterLevel = 1; [L631] int methaneLevelCritical = 0; [L837] int cleanupTimeShifts = 4; [L911] int retValue_acc ; [L912] int tmp ; [L916] FCALL select_helpers() [L917] FCALL select_features() [L918] CALL, EXPR valid_product() [L819] int retValue_acc ; [L822] retValue_acc = 1 [L823] return (retValue_acc); [L918] RET, EXPR valid_product() [L918] tmp = valid_product() [L920] COND TRUE \read(tmp) [L922] FCALL setup() [L923] CALL runTest() [L904] CALL __utac_acc__Specification2_spec__1() [L50] methAndRunningLastTime = 0 [L904] RET __utac_acc__Specification2_spec__1() [L905] CALL test() [L726] int splverifierCounter ; [L727] int tmp ; [L728] int tmp___0 ; [L729] int tmp___1 ; [L730] int tmp___2 ; [L733] splverifierCounter = 0 [L735] COND TRUE 1 [L737] COND TRUE splverifierCounter < 4 [L743] tmp = __VERIFIER_nondet_int() [L745] COND TRUE \read(tmp) [L747] CALL waterRise() [L648] COND TRUE waterLevel < 2 [L649] waterLevel = waterLevel + 1 [L747] RET waterRise() [L753] tmp___0 = __VERIFIER_nondet_int() [L755] COND FALSE !(\read(tmp___0)) [L763] tmp___2 = __VERIFIER_nondet_int() [L765] COND TRUE \read(tmp___2) [L778] CALL timeShift() [L464] COND FALSE !(\read(pumpRunning)) [L471] COND TRUE \read(systemActive) [L473] CALL processEnvironment() [L493] int tmp ; [L496] COND TRUE ! pumpRunning [L498] CALL, EXPR isHighWaterLevel() [L608] int retValue_acc ; [L609] int tmp ; [L610] int tmp___0 ; [L614] CALL, EXPR isHighWaterSensorDry() [L710] int retValue_acc ; [L713] COND FALSE !(waterLevel < 2) [L717] retValue_acc = 0 [L718] return (retValue_acc); [L614] RET, EXPR isHighWaterSensorDry() [L614] tmp = isHighWaterSensorDry() [L616] COND FALSE !(\read(tmp)) [L619] tmp___0 = 1 [L621] retValue_acc = tmp___0 [L622] return (retValue_acc); [L498] RET, EXPR isHighWaterLevel() [L498] tmp = isHighWaterLevel() [L500] COND TRUE \read(tmp) [L502] CALL activatePump() [L527] int tmp ; [L531] CALL, EXPR isMethaneAlarm() [L552] int retValue_acc ; [L556] CALL, EXPR isMethaneLevelCritical() [L669] int retValue_acc ; [L672] retValue_acc = methaneLevelCritical [L673] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] retValue_acc = isMethaneLevelCritical() [L558] return (retValue_acc); [L531] RET, EXPR isMethaneAlarm() [L531] tmp = isMethaneAlarm() [L533] COND FALSE !(\read(tmp)) [L537] CALL activatePump__wrappee__highWaterSensor() [L521] pumpRunning = 1 [L537] RET activatePump__wrappee__highWaterSensor() [L502] RET activatePump() [L473] RET processEnvironment() [L479] CALL __utac_acc__Specification2_spec__2() [L55] int tmp ; [L56] int tmp___0 ; [L60] CALL, EXPR isMethaneLevelCritical() [L669] int retValue_acc ; [L672] retValue_acc = methaneLevelCritical [L673] return (retValue_acc); [L60] RET, EXPR isMethaneLevelCritical() [L60] tmp = isMethaneLevelCritical() [L62] COND FALSE !(\read(tmp)) [L78] methAndRunningLastTime = 0 [L479] RET __utac_acc__Specification2_spec__2() [L778] RET timeShift() [L735] COND TRUE 1 [L737] COND TRUE splverifierCounter < 4 [L743] tmp = __VERIFIER_nondet_int() [L745] COND FALSE !(\read(tmp)) [L753] tmp___0 = __VERIFIER_nondet_int() [L755] COND TRUE \read(tmp___0) [L757] CALL changeMethaneLevel() [L660] COND FALSE !(\read(methaneLevelCritical)) [L663] methaneLevelCritical = 1 [L757] RET changeMethaneLevel() [L763] tmp___2 = __VERIFIER_nondet_int() [L765] COND TRUE \read(tmp___2) [L778] CALL timeShift() [L464] COND TRUE \read(pumpRunning) [L466] CALL lowerWaterLevel() [L636] COND TRUE waterLevel > 0 [L637] waterLevel = waterLevel - 1 [L466] RET lowerWaterLevel() [L471] COND TRUE \read(systemActive) [L473] CALL processEnvironment() [L493] int tmp ; [L496] COND FALSE !(! pumpRunning) [L511] FCALL processEnvironment__wrappee__base() [L473] RET processEnvironment() [L479] CALL __utac_acc__Specification2_spec__2() [L55] int tmp ; [L56] int tmp___0 ; [L60] CALL, EXPR isMethaneLevelCritical() [L669] int retValue_acc ; [L672] retValue_acc = methaneLevelCritical [L673] return (retValue_acc); [L60] RET, EXPR isMethaneLevelCritical() [L60] tmp = isMethaneLevelCritical() [L62] COND TRUE \read(tmp) [L64] CALL, EXPR isPumpRunning() [L563] int retValue_acc ; [L566] retValue_acc = pumpRunning [L567] return (retValue_acc); [L64] RET, EXPR isPumpRunning() [L64] tmp___0 = isPumpRunning() [L66] COND TRUE \read(tmp___0) [L67] COND TRUE \read(methAndRunningLastTime) [L69] CALL __automaton_fail() [L832] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 633 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 66.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 53.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2557 SDtfs, 6639 SDslu, 6335 SDs, 0 SdLazy, 11550 SolverSat, 1721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 504 GetRequests, 292 SyntacticMatches, 4 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 30.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 1187 StatesRemovedByMinimization, 10 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...