/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:32:24,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:32:24,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:32:24,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:32:24,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:32:24,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:32:24,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:32:24,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:32:24,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:32:24,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:32:24,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:32:24,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:32:24,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:32:24,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:32:24,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:32:24,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:32:24,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:32:24,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:32:24,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:32:24,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:32:24,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:32:24,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:32:24,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:32:24,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:32:24,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:32:24,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:32:24,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:32:24,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:32:24,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:32:24,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:32:24,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:32:24,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:32:24,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:32:24,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:32:24,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:32:24,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:32:24,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:32:24,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:32:24,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:32:24,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:32:24,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:32:24,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:32:24,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:32:24,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:32:24,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:32:24,355 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:32:24,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:32:24,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:32:24,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:32:24,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:32:24,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:32:24,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:32:24,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:32:24,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:32:24,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:32:24,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:32:24,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:32:24,358 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:32:24,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:32:24,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:32:24,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:32:24,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:32:24,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:32:24,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:32:24,360 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:32:24,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:32:24,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:32:24,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:32:24,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:32:24,794 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:32:24,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product12.cil.c [2021-02-23 16:32:24,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344f3e5c2/b30fe6864c1a4cd28d861cea2370dc8a/FLAG2a49757f9 [2021-02-23 16:32:25,574 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:32:25,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product12.cil.c [2021-02-23 16:32:25,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344f3e5c2/b30fe6864c1a4cd28d861cea2370dc8a/FLAG2a49757f9 [2021-02-23 16:32:25,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344f3e5c2/b30fe6864c1a4cd28d861cea2370dc8a [2021-02-23 16:32:25,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:32:25,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:32:25,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:32:25,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:32:25,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:32:25,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:32:25" (1/1) ... [2021-02-23 16:32:25,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12688d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:25, skipping insertion in model container [2021-02-23 16:32:25,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:32:25" (1/1) ... [2021-02-23 16:32:25,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:32:25,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:32:26,260 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product12.cil.c[16910,16923] [2021-02-23 16:32:26,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:32:26,291 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:32:26,443 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product12.cil.c[16910,16923] [2021-02-23 16:32:26,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:32:26,482 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:32:26,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26 WrapperNode [2021-02-23 16:32:26,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:32:26,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:32:26,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:32:26,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:32:26,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (1/1) ... [2021-02-23 16:32:26,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (1/1) ... [2021-02-23 16:32:26,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (1/1) ... [2021-02-23 16:32:26,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (1/1) ... [2021-02-23 16:32:26,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (1/1) ... [2021-02-23 16:32:26,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (1/1) ... [2021-02-23 16:32:26,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (1/1) ... [2021-02-23 16:32:26,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:32:26,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:32:26,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:32:26,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:32:26,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:32:26,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:32:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:32:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:32:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:32:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:32:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:32:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:32:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:32:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:32:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:32:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:32:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:32:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:32:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:32:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:32:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:32:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:32:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:32:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:32:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:32:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:32:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:32:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:32:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:32:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:32:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:32:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:32:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:32:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:32:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:32:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:32:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:32:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:32:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:32:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:32:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:32:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:32:26,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:32:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:32:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:32:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:32:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:32:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:32:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:32:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:32:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:32:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:32:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:32:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:32:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:32:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:32:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:32:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:32:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:32:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:32:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:32:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:32:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:32:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:32:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:32:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:32:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:32:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:32:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:32:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:32:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:32:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:32:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:32:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:32:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:32:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:32:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:32:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:32:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:32:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:32:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:32:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:32:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:32:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:32:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:32:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:32:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:32:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:32:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:32:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:32:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:32:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:32:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:32:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:32:26,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:32:27,890 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:32:27,890 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:32:27,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:32:27 BoogieIcfgContainer [2021-02-23 16:32:27,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:32:27,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:32:27,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:32:27,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:32:27,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:32:25" (1/3) ... [2021-02-23 16:32:27,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2531330b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:32:27, skipping insertion in model container [2021-02-23 16:32:27,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:26" (2/3) ... [2021-02-23 16:32:27,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2531330b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:32:27, skipping insertion in model container [2021-02-23 16:32:27,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:32:27" (3/3) ... [2021-02-23 16:32:27,902 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product12.cil.c [2021-02-23 16:32:27,910 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:32:27,915 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:32:27,936 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:32:27,961 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:32:27,961 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:32:27,961 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:32:27,961 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:32:27,961 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:32:27,962 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:32:27,962 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:32:27,962 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:32:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states. [2021-02-23 16:32:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:32:28,003 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:28,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:32:28,005 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:28,011 INFO L82 PathProgramCache]: Analyzing trace with hash 715175809, now seen corresponding path program 1 times [2021-02-23 16:32:28,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:28,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046001928] [2021-02-23 16:32:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:28,104 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:28,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:28,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:28,853 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:28,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:28,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:28,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:28,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:28,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:28,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:28,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:32:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:28,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:32:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:28,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:28,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:32:29,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046001928] [2021-02-23 16:32:29,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:29,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:32:29,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111947985] [2021-02-23 16:32:29,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:32:29,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:29,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:32:29,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:32:29,056 INFO L87 Difference]: Start difference. First operand 260 states. Second operand 3 states. [2021-02-23 16:32:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:30,521 INFO L93 Difference]: Finished difference Result 378 states and 453 transitions. [2021-02-23 16:32:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:32:30,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:32:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:30,549 INFO L225 Difference]: With dead ends: 378 [2021-02-23 16:32:30,549 INFO L226 Difference]: Without dead ends: 248 [2021-02-23 16:32:30,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:32:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-02-23 16:32:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 208. [2021-02-23 16:32:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2021-02-23 16:32:30,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2021-02-23 16:32:30,749 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 147 [2021-02-23 16:32:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:30,753 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2021-02-23 16:32:30,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:32:30,753 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2021-02-23 16:32:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:32:30,767 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:30,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:32:30,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:32:30,771 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:30,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:30,771 INFO L82 PathProgramCache]: Analyzing trace with hash 233204979, now seen corresponding path program 1 times [2021-02-23 16:32:30,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:30,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092960355] [2021-02-23 16:32:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:30,779 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:30,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:30,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:30,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:30,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:30,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:30,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:31,213 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:31,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:31,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:31,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:31,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:31,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:31,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:31,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:31,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:31,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:31,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:31,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:31,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:31,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:31,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:31,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:32:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:31,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:31,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:31,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:32:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:31,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:31,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:32:31,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092960355] [2021-02-23 16:32:31,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:31,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:32:31,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729596801] [2021-02-23 16:32:31,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:32:31,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:31,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:32:31,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:32:31,342 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand 4 states. [2021-02-23 16:32:32,096 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:32:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:32,739 INFO L93 Difference]: Finished difference Result 281 states and 313 transitions. [2021-02-23 16:32:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:32:32,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:32:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:32,751 INFO L225 Difference]: With dead ends: 281 [2021-02-23 16:32:32,751 INFO L226 Difference]: Without dead ends: 231 [2021-02-23 16:32:32,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:32:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-02-23 16:32:32,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 198. [2021-02-23 16:32:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-02-23 16:32:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 209 transitions. [2021-02-23 16:32:32,878 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 209 transitions. Word has length 148 [2021-02-23 16:32:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:32,880 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 209 transitions. [2021-02-23 16:32:32,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:32:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 209 transitions. [2021-02-23 16:32:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:32:32,886 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:32,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:32:32,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:32:32,887 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:32,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1488789586, now seen corresponding path program 1 times [2021-02-23 16:32:32,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:32,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105225993] [2021-02-23 16:32:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:32,892 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:33,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:33,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:33,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,363 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:33,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:32:33,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:32:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:32:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:32:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:32:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:32:33,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105225993] [2021-02-23 16:32:33,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:33,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:32:33,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037610014] [2021-02-23 16:32:33,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:32:33,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:33,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:32:33,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:32:33,562 INFO L87 Difference]: Start difference. First operand 198 states and 209 transitions. Second operand 10 states. [2021-02-23 16:32:34,314 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:32:34,734 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:32:35,103 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:32:35,448 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:35,832 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:36,185 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:37,228 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:32:38,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:38,779 INFO L93 Difference]: Finished difference Result 511 states and 595 transitions. [2021-02-23 16:32:38,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:32:38,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:32:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:38,784 INFO L225 Difference]: With dead ends: 511 [2021-02-23 16:32:38,784 INFO L226 Difference]: Without dead ends: 428 [2021-02-23 16:32:38,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:32:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-02-23 16:32:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 329. [2021-02-23 16:32:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2021-02-23 16:32:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 361 transitions. [2021-02-23 16:32:38,933 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 361 transitions. Word has length 161 [2021-02-23 16:32:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:38,934 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 361 transitions. [2021-02-23 16:32:38,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:32:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 361 transitions. [2021-02-23 16:32:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-02-23 16:32:38,936 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:38,937 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] [2021-02-23 16:32:38,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:32:38,937 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:38,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:38,938 INFO L82 PathProgramCache]: Analyzing trace with hash -778465437, now seen corresponding path program 1 times [2021-02-23 16:32:38,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:38,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494944719] [2021-02-23 16:32:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:38,941 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:39,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:39,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:39,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:39,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:39,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:39,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:39,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:39,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:39,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:39,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,376 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:39,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:32:39,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:32:39,480 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:32:39,482 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:32:39,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:32:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:32:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:32:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:39,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 16:32:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:39,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:39,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:32:39,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494944719] [2021-02-23 16:32:39,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:39,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:32:39,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417326823] [2021-02-23 16:32:39,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:32:39,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:39,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:32:39,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:32:39,681 INFO L87 Difference]: Start difference. First operand 329 states and 361 transitions. Second operand 14 states. [2021-02-23 16:32:40,462 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:32:40,939 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:32:41,306 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:32:41,687 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:42,094 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:42,477 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:43,227 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:32:44,304 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:44,694 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:45,108 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:45,481 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:32:45,821 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:32:46,174 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:32:46,521 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:32:46,877 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:47,237 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:47,616 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:48,043 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:32:48,422 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:48,814 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:50,043 INFO L93 Difference]: Finished difference Result 1017 states and 1238 transitions. [2021-02-23 16:32:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:32:50,045 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2021-02-23 16:32:50,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:50,052 INFO L225 Difference]: With dead ends: 1017 [2021-02-23 16:32:50,052 INFO L226 Difference]: Without dead ends: 803 [2021-02-23 16:32:50,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:32:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-02-23 16:32:50,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 690. [2021-02-23 16:32:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2021-02-23 16:32:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 788 transitions. [2021-02-23 16:32:50,382 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 788 transitions. Word has length 164 [2021-02-23 16:32:50,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:50,383 INFO L480 AbstractCegarLoop]: Abstraction has 690 states and 788 transitions. [2021-02-23 16:32:50,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:32:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 788 transitions. [2021-02-23 16:32:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-23 16:32:50,387 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:50,387 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] [2021-02-23 16:32:50,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:32:50,387 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:50,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1442000778, now seen corresponding path program 1 times [2021-02-23 16:32:50,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:50,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170074652] [2021-02-23 16:32:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:50,392 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:50,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:50,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:50,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:50,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,821 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:50,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:32:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:32:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:32:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:32:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:32:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:50,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:50,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:32:50,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170074652] [2021-02-23 16:32:50,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:50,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:32:50,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996636441] [2021-02-23 16:32:50,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:32:50,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:50,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:32:50,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:32:50,969 INFO L87 Difference]: Start difference. First operand 690 states and 788 transitions. Second operand 6 states. [2021-02-23 16:32:51,531 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:32:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:52,812 INFO L93 Difference]: Finished difference Result 1291 states and 1529 transitions. [2021-02-23 16:32:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:32:52,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2021-02-23 16:32:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:52,818 INFO L225 Difference]: With dead ends: 1291 [2021-02-23 16:32:52,819 INFO L226 Difference]: Without dead ends: 716 [2021-02-23 16:32:52,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:32:52,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-02-23 16:32:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 625. [2021-02-23 16:32:53,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2021-02-23 16:32:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 684 transitions. [2021-02-23 16:32:53,066 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 684 transitions. Word has length 169 [2021-02-23 16:32:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:53,066 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 684 transitions. [2021-02-23 16:32:53,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:32:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 684 transitions. [2021-02-23 16:32:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-02-23 16:32:53,071 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:53,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-23 16:32:53,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:32:53,072 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:53,073 INFO L82 PathProgramCache]: Analyzing trace with hash -153961050, now seen corresponding path program 1 times [2021-02-23 16:32:53,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:53,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059478787] [2021-02-23 16:32:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:53,630 WARN L202 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-02-23 16:32:53,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:53,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-02-23 16:32:53,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:53,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:53,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:53,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:53,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:53,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:53,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:53,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:54,176 WARN L202 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-02-23 16:32:54,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:54,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-02-23 16:32:54,647 WARN L202 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 106 [2021-02-23 16:32:54,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:54,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239