/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_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:06:52,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:06:52,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:06:52,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:06:52,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:06:52,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:06:52,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:06:52,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:06:52,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:06:52,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:06:52,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:06:52,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:06:52,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:06:52,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:06:52,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:06:52,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:06:52,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:06:52,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:06:52,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:06:52,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:06:52,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:06:52,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:06:52,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:06:52,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:06:52,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:06:52,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:06:52,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:06:52,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:06:52,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:06:52,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:06:52,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:06:52,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:06:52,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:06:52,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:06:52,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:06:52,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:06:52,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:06:52,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:06:52,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:06:52,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:06:52,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:06:52,847 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 19:06:52,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:06:52,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:06:52,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:06:52,880 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:06:52,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:06:52,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:06:52,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:06:52,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:06:52,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:06:52,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:06:52,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:06:52,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:06:52,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:06:52,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:06:52,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:06:52,886 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:06:52,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:06:52,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:06:52,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:06:52,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:06:52,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:06:52,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:06:52,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:06:53,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:06:53,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:06:53,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:06:53,376 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:06:53,376 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:06:53,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product13.cil.c [2021-02-21 19:06:53,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efde29b20/7bab04a8af094192a364c295a358dbd6/FLAG308ca9ea8 [2021-02-21 19:06:54,305 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:06:54,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product13.cil.c [2021-02-21 19:06:54,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efde29b20/7bab04a8af094192a364c295a358dbd6/FLAG308ca9ea8 [2021-02-21 19:06:54,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efde29b20/7bab04a8af094192a364c295a358dbd6 [2021-02-21 19:06:54,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:06:54,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:06:54,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:06:54,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:06:54,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:06:54,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:06:54" (1/1) ... [2021-02-21 19:06:54,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244f0ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:54, skipping insertion in model container [2021-02-21 19:06:54,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:06:54" (1/1) ... [2021-02-21 19:06:54,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:06:54,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:06:55,040 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_product13.cil.c[12170,12183] [2021-02-21 19:06:55,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:06:55,121 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:06:55,224 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_product13.cil.c[12170,12183] [2021-02-21 19:06:55,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:06:55,323 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:06:55,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55 WrapperNode [2021-02-21 19:06:55,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:06:55,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:06:55,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:06:55,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:06:55,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (1/1) ... [2021-02-21 19:06:55,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (1/1) ... [2021-02-21 19:06:55,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (1/1) ... [2021-02-21 19:06:55,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (1/1) ... [2021-02-21 19:06:55,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (1/1) ... [2021-02-21 19:06:55,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (1/1) ... [2021-02-21 19:06:55,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (1/1) ... [2021-02-21 19:06:55,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:06:55,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:06:55,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:06:55,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:06:55,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:06:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:06:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:06:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:06:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:06:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:06:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:06:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:06:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:06:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:06:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:06:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:06:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:06:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:06:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:06:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:06:55,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:06:55,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:06:55,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:06:55,703 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:06:55,704 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:06:55,707 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:06:55,707 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:06:55,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:06:55,707 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:06:55,708 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:06:55,708 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:06:55,708 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 19:06:55,708 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:06:55,708 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:06:55,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:06:55,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:06:55,709 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:06:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:06:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:06:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:06:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:06:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:06:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:06:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:06:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:06:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:06:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:06:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:06:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:06:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:06:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:06:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:06:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:06:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:06:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:06:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:06:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:06:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:06:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:06:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:06:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:06:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:06:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:06:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:06:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:06:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:06:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:06:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:06:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:06:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:06:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:06:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:06:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:06:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:06:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:06:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:06:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:06:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:06:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:06:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:06:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:06:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:06:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:06:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:06:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:06:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:06:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:06:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:06:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 19:06:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:06:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:06:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:06:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:06:57,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:06:57,377 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:06:57,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:06:57 BoogieIcfgContainer [2021-02-21 19:06:57,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:06:57,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:06:57,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:06:57,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:06:57,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:06:54" (1/3) ... [2021-02-21 19:06:57,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee5cc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:06:57, skipping insertion in model container [2021-02-21 19:06:57,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:06:55" (2/3) ... [2021-02-21 19:06:57,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee5cc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:06:57, skipping insertion in model container [2021-02-21 19:06:57,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:06:57" (3/3) ... [2021-02-21 19:06:57,393 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product13.cil.c [2021-02-21 19:06:57,401 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:06:57,408 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:06:57,432 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:06:57,462 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:06:57,462 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:06:57,462 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:06:57,462 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:06:57,463 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:06:57,463 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:06:57,463 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:06:57,463 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:06:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-02-21 19:06:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:06:57,511 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:06:57,513 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 19:06:57,514 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:06:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:06:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash -729966181, now seen corresponding path program 1 times [2021-02-21 19:06:57,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:06:57,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872821940] [2021-02-21 19:06:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:06:57,624 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:06:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:06:58,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,516 WARN L202 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:06:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:06:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:06:58,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:06:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:06:58,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:06:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:06:58,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:06:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:06:58,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:06:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:06:58,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:06:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:06:58,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:06:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:06:58,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:06:58,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:06:58,738 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 19:06:58,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872821940] [2021-02-21 19:06:58,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:06:58,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:06:58,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81108665] [2021-02-21 19:06:58,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:06:58,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:06:58,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:06:58,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:06:58,775 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-02-21 19:07:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:07:00,560 INFO L93 Difference]: Finished difference Result 407 states and 485 transitions. [2021-02-21 19:07:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:07:00,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:07:00,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:07:00,585 INFO L225 Difference]: With dead ends: 407 [2021-02-21 19:07:00,585 INFO L226 Difference]: Without dead ends: 262 [2021-02-21 19:07:00,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:07:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-21 19:07:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2021-02-21 19:07:00,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-21 19:07:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 239 transitions. [2021-02-21 19:07:00,743 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 239 transitions. Word has length 147 [2021-02-21 19:07:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:07:00,744 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 239 transitions. [2021-02-21 19:07:00,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:07:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 239 transitions. [2021-02-21 19:07:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:07:00,749 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:00,749 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 19:07:00,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:07:00,750 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:00,751 INFO L82 PathProgramCache]: Analyzing trace with hash -785285728, now seen corresponding path program 1 times [2021-02-21 19:07:00,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:00,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487927478] [2021-02-21 19:07:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:00,757 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:07:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:00,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:00,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:00,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:00,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:00,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:00,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:01,317 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:07:01,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:07:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:01,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:01,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:07:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:01,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:01,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:07:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:01,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:01,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:07:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:01,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:01,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:07:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:01,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:01,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:07:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:01,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:01,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:01,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:07:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:01,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:01,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:01,429 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 19:07:01,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487927478] [2021-02-21 19:07:01,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:07:01,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:07:01,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184968716] [2021-02-21 19:07:01,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:07:01,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:07:01,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:07:01,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:07:01,434 INFO L87 Difference]: Start difference. First operand 223 states and 239 transitions. Second operand 4 states. [2021-02-21 19:07:02,319 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:07:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:07:03,252 INFO L93 Difference]: Finished difference Result 323 states and 359 transitions. [2021-02-21 19:07:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:07:03,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:07:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:07:03,258 INFO L225 Difference]: With dead ends: 323 [2021-02-21 19:07:03,258 INFO L226 Difference]: Without dead ends: 245 [2021-02-21 19:07:03,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:07:03,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-21 19:07:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2021-02-21 19:07:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-21 19:07:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2021-02-21 19:07:03,364 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 148 [2021-02-21 19:07:03,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:07:03,365 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2021-02-21 19:07:03,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:07:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2021-02-21 19:07:03,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:07:03,368 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:03,369 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] [2021-02-21 19:07:03,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:07:03,369 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:03,370 INFO L82 PathProgramCache]: Analyzing trace with hash -88979863, now seen corresponding path program 1 times [2021-02-21 19:07:03,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:03,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325312244] [2021-02-21 19:07:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:03,374 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:07:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:03,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:03,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:03,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:03,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:03,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:03,901 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:07:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:07:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:03,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:03,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:07:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:07:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:03,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:07:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:03,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:03,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:07:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:03,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:03,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:04,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:04,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:07:04,032 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:07:04,034 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:07:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:07:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:04,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:04,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:07:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:04,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:04,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:07:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:04,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:04,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:04,201 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 19:07:04,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325312244] [2021-02-21 19:07:04,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:07:04,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:07:04,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319523911] [2021-02-21 19:07:04,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:07:04,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:07:04,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:07:04,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:07:04,204 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 9 states. [2021-02-21 19:07:05,112 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:07:05,644 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:07:06,035 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:07:06,444 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:06,826 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:07:07,226 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:07:08,677 INFO L93 Difference]: Finished difference Result 343 states and 384 transitions. [2021-02-21 19:07:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:07:08,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:07:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:07:08,681 INFO L225 Difference]: With dead ends: 343 [2021-02-21 19:07:08,681 INFO L226 Difference]: Without dead ends: 245 [2021-02-21 19:07:08,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:07:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-21 19:07:08,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2021-02-21 19:07:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-21 19:07:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 225 transitions. [2021-02-21 19:07:08,775 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 225 transitions. Word has length 157 [2021-02-21 19:07:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:07:08,776 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 225 transitions. [2021-02-21 19:07:08,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:07:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 225 transitions. [2021-02-21 19:07:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:07:08,778 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:08,778 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] [2021-02-21 19:07:08,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:07:08,779 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:08,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:08,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1686668618, now seen corresponding path program 1 times [2021-02-21 19:07:08,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:08,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398059768] [2021-02-21 19:07:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:08,785 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:07:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:08,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:08,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:08,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:08,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:08,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:08,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:08,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:08,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:08,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:08,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:08,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:08,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,367 WARN L202 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:07:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:07:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:07:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:07:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:07:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:07:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:07:09,521 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:07:09,523 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:07:09,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:07:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:07:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:07:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:07:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:09,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:09,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:07:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:09,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:09,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:09,684 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 19:07:09,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398059768] [2021-02-21 19:07:09,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:07:09,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:07:09,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407462759] [2021-02-21 19:07:09,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:07:09,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:07:09,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:07:09,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:07:09,687 INFO L87 Difference]: Start difference. First operand 213 states and 225 transitions. Second operand 14 states. [2021-02-21 19:07:10,423 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:07:10,985 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:07:11,396 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:07:11,824 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:12,234 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:07:12,623 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:13,557 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:07:14,791 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:15,213 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:07:15,740 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:07:16,193 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:07:16,572 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:07:16,957 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:07:17,368 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:07:17,760 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:18,156 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:07:18,614 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:07:19,165 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:07:19,574 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:07:20,040 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:07:21,435 INFO L93 Difference]: Finished difference Result 586 states and 704 transitions. [2021-02-21 19:07:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:07:21,436 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-21 19:07:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:07:21,448 INFO L225 Difference]: With dead ends: 586 [2021-02-21 19:07:21,448 INFO L226 Difference]: Without dead ends: 488 [2021-02-21 19:07:21,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:07:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-02-21 19:07:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 385. [2021-02-21 19:07:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2021-02-21 19:07:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 423 transitions. [2021-02-21 19:07:21,690 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 423 transitions. Word has length 165 [2021-02-21 19:07:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:07:21,690 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 423 transitions. [2021-02-21 19:07:21,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:07:21,691 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 423 transitions. [2021-02-21 19:07:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 19:07:21,694 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:21,694 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] [2021-02-21 19:07:21,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:07:21,695 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:21,695 INFO L82 PathProgramCache]: Analyzing trace with hash 90893772, now seen corresponding path program 1 times [2021-02-21 19:07:21,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:21,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045698339] [2021-02-21 19:07:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:21,699 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:07:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:21,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:21,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:21,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:21,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:21,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:21,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:21,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:21,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:21,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:21,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:21,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:21,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,113 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:07:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:07:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:07:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:07:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:07:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:07:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 19:07:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:07:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:07:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 19:07:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 19:07:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:22,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:22,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:22,298 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 19:07:22,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045698339] [2021-02-21 19:07:22,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:07:22,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:07:22,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487779103] [2021-02-21 19:07:22,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:07:22,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:07:22,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:07:22,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:07:22,301 INFO L87 Difference]: Start difference. First operand 385 states and 423 transitions. Second operand 6 states. [2021-02-21 19:07:22,998 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:07:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:07:23,832 INFO L93 Difference]: Finished difference Result 587 states and 667 transitions. [2021-02-21 19:07:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:07:23,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-21 19:07:23,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:07:23,836 INFO L225 Difference]: With dead ends: 587 [2021-02-21 19:07:23,836 INFO L226 Difference]: Without dead ends: 317 [2021-02-21 19:07:23,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:07:23,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-21 19:07:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 296. [2021-02-21 19:07:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-21 19:07:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 313 transitions. [2021-02-21 19:07:23,969 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 313 transitions. Word has length 170 [2021-02-21 19:07:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:07:23,970 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 313 transitions. [2021-02-21 19:07:23,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:07:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 313 transitions. [2021-02-21 19:07:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-21 19:07:23,974 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:23,974 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, 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] [2021-02-21 19:07:23,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:07:23,975 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:23,976 INFO L82 PathProgramCache]: Analyzing trace with hash 274035482, now seen corresponding path program 1 times [2021-02-21 19:07:23,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:23,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189149993] [2021-02-21 19:07:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:24,627 WARN L202 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 111 [2021-02-21 19:07:24,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:24,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235