/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_product08.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:02:09,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:02:09,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:02:09,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:02:09,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:02:09,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:02:09,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:02:09,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:02:09,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:02:09,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:02:09,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:02:09,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:02:09,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:02:09,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:02:09,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:02:09,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:02:09,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:02:09,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:02:09,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:02:09,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:02:09,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:02:09,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:02:09,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:02:09,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:02:09,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:02:09,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:02:09,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:02:09,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:02:09,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:02:09,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:02:09,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:02:09,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:02:09,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:02:09,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:02:09,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:02:09,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:02:09,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:02:09,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:02:09,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:02:09,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:02:09,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:02:09,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:02:09,301 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:02:09,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:02:09,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:02:09,305 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:02:09,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:02:09,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:02:09,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:02:09,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:02:09,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:02:09,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:02:09,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:02:09,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:02:09,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:02:09,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:02:09,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:02:09,309 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:02:09,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:02:09,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:02:09,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:02:09,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:02:09,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:02:09,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:02:09,311 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:02:09,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:02:09,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:02:09,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:02:09,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:02:09,765 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:02:09,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product08.cil.c [2021-02-21 19:02:09,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcb54423/a52e4ba8074a41cb80b76fa3ddc07598/FLAG4b60e484a [2021-02-21 19:02:10,624 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:02:10,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product08.cil.c [2021-02-21 19:02:10,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcb54423/a52e4ba8074a41cb80b76fa3ddc07598/FLAG4b60e484a [2021-02-21 19:02:10,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcb54423/a52e4ba8074a41cb80b76fa3ddc07598 [2021-02-21 19:02:10,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:02:10,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:02:10,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:02:10,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:02:10,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:02:10,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:02:10" (1/1) ... [2021-02-21 19:02:10,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9296f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:10, skipping insertion in model container [2021-02-21 19:02:10,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:02:10" (1/1) ... [2021-02-21 19:02:10,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:02:10,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:02:11,399 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_product08.cil.c[17065,17078] [2021-02-21 19:02:11,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:02:11,424 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:02:11,497 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_product08.cil.c[17065,17078] [2021-02-21 19:02:11,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:02:11,540 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:02:11,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11 WrapperNode [2021-02-21 19:02:11,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:02:11,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:02:11,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:02:11,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:02:11,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (1/1) ... [2021-02-21 19:02:11,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (1/1) ... [2021-02-21 19:02:11,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (1/1) ... [2021-02-21 19:02:11,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (1/1) ... [2021-02-21 19:02:11,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (1/1) ... [2021-02-21 19:02:11,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (1/1) ... [2021-02-21 19:02:11,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (1/1) ... [2021-02-21 19:02:11,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:02:11,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:02:11,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:02:11,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:02:11,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:02:11,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:02:11,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:02:11,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:02:11,773 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:02:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:02:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:02:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:02:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:02:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:02:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:02:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:02:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:02:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:02:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:02:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:02:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:02:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:02:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:02:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:02:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:02:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:02:11,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:02:11,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:02:11,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:02:11,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:02:11,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:02:11,783 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:02:11,783 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:02:11,783 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:02:11,783 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:02:11,783 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:02:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:02:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:02:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:02:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:02:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:02:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:02:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:02:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:02:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:02:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:02:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:02:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:02:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:02:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:02:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:02:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:02:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:02:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:02:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:02:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:02:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:02:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:02:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:02:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:02:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:02:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:02:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:02:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:02:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:02:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:02:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:02:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:02:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:02:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:02:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:02:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:02:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:02:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:02:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:02:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:02:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:02:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:02:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:02:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:02:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:02:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:02:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:02:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:02:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:02:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:02:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:02:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:02:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:02:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:02:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:02:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:02:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:02:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:02:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:02:13,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:02:13,295 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:02:13,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:02:13 BoogieIcfgContainer [2021-02-21 19:02:13,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:02:13,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:02:13,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:02:13,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:02:13,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:02:10" (1/3) ... [2021-02-21 19:02:13,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a54c911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:02:13, skipping insertion in model container [2021-02-21 19:02:13,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:11" (2/3) ... [2021-02-21 19:02:13,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a54c911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:02:13, skipping insertion in model container [2021-02-21 19:02:13,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:02:13" (3/3) ... [2021-02-21 19:02:13,310 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product08.cil.c [2021-02-21 19:02:13,317 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:02:13,323 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:02:13,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:02:13,367 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:02:13,370 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:02:13,370 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:02:13,370 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:02:13,370 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:02:13,371 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:02:13,371 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:02:13,371 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:02:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-02-21 19:02:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:02:13,415 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:13,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:13,416 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:13,423 INFO L82 PathProgramCache]: Analyzing trace with hash 391071876, now seen corresponding path program 1 times [2021-02-21 19:02:13,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:13,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341298472] [2021-02-21 19:02:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:13,523 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:13,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:13,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:13,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:13,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:14,589 WARN L202 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:14,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:14,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:14,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:14,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:14,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:14,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:14,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:14,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:14,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:14,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:14,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:14,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:14,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:02:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:14,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:14,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:14,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:02:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:14,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:14,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:14,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341298472] [2021-02-21 19:02:14,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:14,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:02:14,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110702863] [2021-02-21 19:02:14,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:02:14,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:14,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:02:14,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:02:14,781 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-02-21 19:02:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:16,498 INFO L93 Difference]: Finished difference Result 430 states and 514 transitions. [2021-02-21 19:02:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:02:16,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:02:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:16,529 INFO L225 Difference]: With dead ends: 430 [2021-02-21 19:02:16,529 INFO L226 Difference]: Without dead ends: 275 [2021-02-21 19:02:16,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:02:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-02-21 19:02:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 233. [2021-02-21 19:02:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-02-21 19:02:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 251 transitions. [2021-02-21 19:02:16,682 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 251 transitions. Word has length 147 [2021-02-21 19:02:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:16,683 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 251 transitions. [2021-02-21 19:02:16,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:02:16,683 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 251 transitions. [2021-02-21 19:02:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:02:16,688 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:16,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:16,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:02:16,689 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:16,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2113348991, now seen corresponding path program 1 times [2021-02-21 19:02:16,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:16,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487927478] [2021-02-21 19:02:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:16,695 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:16,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:16,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:16,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:16,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:16,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:16,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:17,292 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:17,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:17,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:17,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:17,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:17,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:17,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:17,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:17,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:17,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:17,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:17,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:02:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:17,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:17,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:02:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:17,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:17,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:17,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487927478] [2021-02-21 19:02:17,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:17,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:02:17,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184968716] [2021-02-21 19:02:17,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:02:17,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:17,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:02:17,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:02:17,448 INFO L87 Difference]: Start difference. First operand 233 states and 251 transitions. Second operand 4 states. [2021-02-21 19:02:18,233 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:02:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:19,130 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2021-02-21 19:02:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:02:19,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:02:19,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:19,135 INFO L225 Difference]: With dead ends: 336 [2021-02-21 19:02:19,135 INFO L226 Difference]: Without dead ends: 258 [2021-02-21 19:02:19,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:02:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-02-21 19:02:19,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 223. [2021-02-21 19:02:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-21 19:02:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2021-02-21 19:02:19,247 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 148 [2021-02-21 19:02:19,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:19,248 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2021-02-21 19:02:19,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:02:19,248 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2021-02-21 19:02:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:02:19,251 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:19,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:19,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:02:19,252 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:19,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1962158130, now seen corresponding path program 1 times [2021-02-21 19:02:19,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:19,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098626559] [2021-02-21 19:02:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:19,257 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:19,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:19,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:19,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,667 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:19,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:02:19,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:02:19,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:02:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:19,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:02:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:02:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:19,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:19,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:19,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098626559] [2021-02-21 19:02:19,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:19,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:02:19,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129418784] [2021-02-21 19:02:19,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:02:19,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:19,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:02:19,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:02:19,879 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand 10 states. [2021-02-21 19:02:20,633 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:21,073 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:02:21,476 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:02:21,872 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:22,213 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:22,576 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:23,697 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:02:25,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:25,873 INFO L93 Difference]: Finished difference Result 590 states and 688 transitions. [2021-02-21 19:02:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:02:25,877 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:02:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:25,883 INFO L225 Difference]: With dead ends: 590 [2021-02-21 19:02:25,884 INFO L226 Difference]: Without dead ends: 482 [2021-02-21 19:02:25,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:02:25,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-02-21 19:02:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 391. [2021-02-21 19:02:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2021-02-21 19:02:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 435 transitions. [2021-02-21 19:02:26,065 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 435 transitions. Word has length 161 [2021-02-21 19:02:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:26,065 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 435 transitions. [2021-02-21 19:02:26,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:02:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 435 transitions. [2021-02-21 19:02:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:02:26,069 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:26,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:26,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:02:26,070 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:26,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1212045073, now seen corresponding path program 1 times [2021-02-21 19:02:26,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:26,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768184317] [2021-02-21 19:02:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:26,074 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:26,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:26,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:26,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:26,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:26,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:26,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:26,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:26,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:26,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:26,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,565 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:02:26,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:02:26,667 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:02:26,669 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:02:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:02:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:02:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:26,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:02:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:26,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:26,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:26,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768184317] [2021-02-21 19:02:26,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:26,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:02:26,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181057269] [2021-02-21 19:02:26,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:02:26,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:26,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:02:26,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:02:26,813 INFO L87 Difference]: Start difference. First operand 391 states and 435 transitions. Second operand 14 states. [2021-02-21 19:02:27,680 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:28,138 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:02:28,532 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:02:28,940 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:29,319 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:29,694 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:30,447 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:02:31,697 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:32,132 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:32,656 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:33,063 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:02:33,438 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:33,829 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:02:34,247 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:02:34,617 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:34,955 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:35,359 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:35,843 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:02:36,279 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:36,738 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:38,437 INFO L93 Difference]: Finished difference Result 1295 states and 1594 transitions. [2021-02-21 19:02:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:02:38,441 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:02:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:38,450 INFO L225 Difference]: With dead ends: 1295 [2021-02-21 19:02:38,450 INFO L226 Difference]: Without dead ends: 1019 [2021-02-21 19:02:38,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:02:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-02-21 19:02:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 880. [2021-02-21 19:02:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2021-02-21 19:02:38,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1016 transitions. [2021-02-21 19:02:38,920 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1016 transitions. Word has length 166 [2021-02-21 19:02:38,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:38,921 INFO L480 AbstractCegarLoop]: Abstraction has 880 states and 1016 transitions. [2021-02-21 19:02:38,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:02:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1016 transitions. [2021-02-21 19:02:38,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:02:38,928 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:38,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:38,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:02:38,929 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:38,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:38,930 INFO L82 PathProgramCache]: Analyzing trace with hash -994416912, now seen corresponding path program 1 times [2021-02-21 19:02:38,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:38,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332229718] [2021-02-21 19:02:38,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:38,933 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:39,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:39,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:39,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:39,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:39,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:39,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,346 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:39,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:02:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:39,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:02:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:02:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:02:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:39,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:39,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:39,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332229718] [2021-02-21 19:02:39,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:39,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:02:39,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459042029] [2021-02-21 19:02:39,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:02:39,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:39,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:02:39,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:02:39,577 INFO L87 Difference]: Start difference. First operand 880 states and 1016 transitions. Second operand 6 states. [2021-02-21 19:02:40,244 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:41,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:41,587 INFO L93 Difference]: Finished difference Result 1523 states and 1836 transitions. [2021-02-21 19:02:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:02:41,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:02:41,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:41,593 INFO L225 Difference]: With dead ends: 1523 [2021-02-21 19:02:41,594 INFO L226 Difference]: Without dead ends: 758 [2021-02-21 19:02:41,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:02:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-02-21 19:02:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 655. [2021-02-21 19:02:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2021-02-21 19:02:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 714 transitions. [2021-02-21 19:02:41,975 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 714 transitions. Word has length 171 [2021-02-21 19:02:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:41,976 INFO L480 AbstractCegarLoop]: Abstraction has 655 states and 714 transitions. [2021-02-21 19:02:41,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:02:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 714 transitions. [2021-02-21 19:02:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:02:41,980 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:41,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:41,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:02:41,993 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:41,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:41,994 INFO L82 PathProgramCache]: Analyzing trace with hash 14602935, now seen corresponding path program 1 times [2021-02-21 19:02:41,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:41,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790160200] [2021-02-21 19:02:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY