/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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:02:44,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:02:44,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:02:44,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:02:44,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:02:44,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:02:44,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:02:44,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:02:44,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:02:44,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:02:44,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:02:44,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:02:44,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:02:44,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:02:44,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:02:44,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:02:44,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:02:44,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:02:44,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:02:44,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:02:44,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:02:44,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:02:44,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:02:44,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:02:44,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:02:44,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:02:44,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:02:44,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:02:44,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:02:44,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:02:44,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:02:44,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:02:44,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:02:44,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:02:44,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:02:44,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:02:44,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:02:44,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:02:44,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:02:44,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:02:44,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:02:44,568 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 19:02:44,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:02:44,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:02:44,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:02:44,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:02:44,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:02:44,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:02:44,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:02:44,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:02:44,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:02:44,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:02:44,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:02:44,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:02:44,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:02:44,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:02:44,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:02:44,602 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:02:44,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:02:44,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:02:44,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:02:44,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:02:44,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:02:44,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:02:44,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:02:45,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:02:45,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:02:45,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:02:45,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:02:45,069 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:02:45,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product11.cil.c [2021-02-21 19:02:45,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c131520d/6ec620148c4f4bf1806356ab589c9dfb/FLAG4e000780d [2021-02-21 19:02:45,916 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:02:45,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product11.cil.c [2021-02-21 19:02:45,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c131520d/6ec620148c4f4bf1806356ab589c9dfb/FLAG4e000780d [2021-02-21 19:02:46,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c131520d/6ec620148c4f4bf1806356ab589c9dfb [2021-02-21 19:02:46,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:02:46,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:02:46,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:02:46,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:02:46,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:02:46,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503c8509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46, skipping insertion in model container [2021-02-21 19:02:46,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:02:46,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:02:46,442 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_product11.cil.c[1281,1294] [2021-02-21 19:02:46,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:02:46,586 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:02:46,603 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_product11.cil.c[1281,1294] [2021-02-21 19:02:46,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:02:46,747 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:02:46,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46 WrapperNode [2021-02-21 19:02:46,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:02:46,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:02:46,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:02:46,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:02:46,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (1/1) ... [2021-02-21 19:02:46,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:02:46,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:02:46,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:02:46,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:02:46,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (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 19:02:47,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:02:47,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:02:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:02:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:02:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:02:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:02:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:02:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 19:02:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:02:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:02:47,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:02:47,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:02:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:02:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:02:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:02:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:02:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:02:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:02:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:02:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:02:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:02:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:02:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:02:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:02:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:02:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:02:47,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:02:47,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:02:47,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:02:47,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:02:47,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:02:47,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:02:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:02:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:02:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:02:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:02:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:02:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:02:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:02:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:02:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:02:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:02:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:02:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:02:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:02:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:02:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:02:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:02:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:02:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:02:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:02:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:02:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:02:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:02:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:02:47,045 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 19:02:47,045 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:02:47,045 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:02:47,045 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:02:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:02:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:02:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:02:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:02:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:02:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:02:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:02:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:02:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:02:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:02:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:02:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:02:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:02:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:02:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:02:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:02:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:02:47,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:02:47,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:02:47,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:02:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:02:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:02:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:02:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:02:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:02:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:02:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:02:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:02:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:02:48,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:02:48,211 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:02:48,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:02:48 BoogieIcfgContainer [2021-02-21 19:02:48,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:02:48,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:02:48,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:02:48,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:02:48,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:02:46" (1/3) ... [2021-02-21 19:02:48,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9cf681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:02:48, skipping insertion in model container [2021-02-21 19:02:48,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:46" (2/3) ... [2021-02-21 19:02:48,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9cf681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:02:48, skipping insertion in model container [2021-02-21 19:02:48,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:02:48" (3/3) ... [2021-02-21 19:02:48,230 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product11.cil.c [2021-02-21 19:02:48,237 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:02:48,244 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:02:48,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:02:48,303 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:02:48,303 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:02:48,303 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:02:48,304 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:02:48,304 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:02:48,304 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:02:48,304 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:02:48,304 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:02:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states. [2021-02-21 19:02:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:02:48,358 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:48,359 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 19:02:48,359 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:48,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:48,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2144888488, now seen corresponding path program 1 times [2021-02-21 19:02:48,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:48,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821418619] [2021-02-21 19:02:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:48,469 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:48,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:48,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:48,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:48,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:49,188 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:49,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:49,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:49,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:49,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:49,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:49,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:49,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:49,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:49,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:49,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:49,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:49,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:02:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:49,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:49,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:02:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:49,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:49,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:49,437 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 19:02:49,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821418619] [2021-02-21 19:02:49,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:49,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:02:49,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414742310] [2021-02-21 19:02:49,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:02:49,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:49,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:02:49,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:02:49,469 INFO L87 Difference]: Start difference. First operand 256 states. Second operand 3 states. [2021-02-21 19:02:51,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:51,068 INFO L93 Difference]: Finished difference Result 369 states and 443 transitions. [2021-02-21 19:02:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:02:51,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:02:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:51,086 INFO L225 Difference]: With dead ends: 369 [2021-02-21 19:02:51,086 INFO L226 Difference]: Without dead ends: 243 [2021-02-21 19:02:51,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:02:51,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-21 19:02:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 204. [2021-02-21 19:02:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-02-21 19:02:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2021-02-21 19:02:51,257 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 147 [2021-02-21 19:02:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:51,262 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2021-02-21 19:02:51,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:02:51,262 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2021-02-21 19:02:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:02:51,275 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:51,275 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 19:02:51,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:02:51,276 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:51,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1468067310, now seen corresponding path program 1 times [2021-02-21 19:02:51,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:51,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068063211] [2021-02-21 19:02:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:51,287 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:51,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,793 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:51,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:02:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:02:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:51,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068063211] [2021-02-21 19:02:51,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:51,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:02:51,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125181730] [2021-02-21 19:02:51,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:02:51,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:51,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:02:51,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:02:51,902 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand 4 states. [2021-02-21 19:02:52,695 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:02:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:53,350 INFO L93 Difference]: Finished difference Result 276 states and 307 transitions. [2021-02-21 19:02:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:02:53,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:02:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:53,355 INFO L225 Difference]: With dead ends: 276 [2021-02-21 19:02:53,355 INFO L226 Difference]: Without dead ends: 226 [2021-02-21 19:02:53,357 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 19:02:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-21 19:02:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 194. [2021-02-21 19:02:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-02-21 19:02:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 205 transitions. [2021-02-21 19:02:53,436 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 205 transitions. Word has length 148 [2021-02-21 19:02:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:53,437 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 205 transitions. [2021-02-21 19:02:53,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:02:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 205 transitions. [2021-02-21 19:02:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:02:53,439 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:53,439 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 19:02:53,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:02:53,440 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:53,441 INFO L82 PathProgramCache]: Analyzing trace with hash 276052010, now seen corresponding path program 1 times [2021-02-21 19:02:53,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:53,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012821447] [2021-02-21 19:02:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:53,445 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:53,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:53,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:53,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:53,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:53,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:53,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:53,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:53,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:53,876 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:53,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:53,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:02:53,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:53,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:53,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:53,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:53,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:53,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:53,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:02:53,992 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:02:53,993 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:02:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:54,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:54,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:02:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:54,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:54,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:54,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:02:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:54,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:54,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:54,067 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 19:02:54,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012821447] [2021-02-21 19:02:54,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:54,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:02:54,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170627118] [2021-02-21 19:02:54,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:02:54,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:54,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:02:54,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:02:54,070 INFO L87 Difference]: Start difference. First operand 194 states and 205 transitions. Second operand 9 states. [2021-02-21 19:02:54,815 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:55,227 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:02:55,594 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:02:55,966 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:56,334 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:56,686 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:57,664 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:02:58,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:58,967 INFO L93 Difference]: Finished difference Result 475 states and 544 transitions. [2021-02-21 19:02:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:02:58,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:02:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:58,976 INFO L225 Difference]: With dead ends: 475 [2021-02-21 19:02:58,977 INFO L226 Difference]: Without dead ends: 396 [2021-02-21 19:02:58,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:02:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-02-21 19:02:59,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 325. [2021-02-21 19:02:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-21 19:02:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 357 transitions. [2021-02-21 19:02:59,123 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 357 transitions. Word has length 157 [2021-02-21 19:02:59,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:59,124 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 357 transitions. [2021-02-21 19:02:59,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:02:59,125 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 357 transitions. [2021-02-21 19:02:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-21 19:02:59,127 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:59,127 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] [2021-02-21 19:02:59,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:02:59,128 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:59,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1789875577, now seen corresponding path program 1 times [2021-02-21 19:02:59,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:59,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421052862] [2021-02-21 19:02:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:59,132 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:59,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:59,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:59,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:59,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:59,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:59,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:59,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:59,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:59,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:59,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,689 WARN L202 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:02:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:02:59,787 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:02:59,788 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:02:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:02:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 19:02:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:59,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 19:02:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:59,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:59,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:59,896 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 19:02:59,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421052862] [2021-02-21 19:02:59,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:59,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 19:02:59,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199267389] [2021-02-21 19:02:59,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 19:02:59,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:59,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 19:02:59,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-02-21 19:02:59,900 INFO L87 Difference]: Start difference. First operand 325 states and 357 transitions. Second operand 13 states. [2021-02-21 19:03:00,511 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:03:00,970 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:03:01,341 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:03:01,716 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:03:02,090 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:02,433 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:03:03,240 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:03:04,103 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:03:04,470 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:04,876 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:05,250 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:03:05,618 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:03:05,971 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:03:06,335 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:03:06,691 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:07,044 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:03:07,444 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:07,861 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:03:08,231 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:08,624 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:03:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:03:09,393 INFO L93 Difference]: Finished difference Result 931 states and 1116 transitions. [2021-02-21 19:03:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-21 19:03:09,394 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2021-02-21 19:03:09,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:03:09,405 INFO L225 Difference]: With dead ends: 931 [2021-02-21 19:03:09,405 INFO L226 Difference]: Without dead ends: 721 [2021-02-21 19:03:09,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 19:03:09,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-02-21 19:03:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 678. [2021-02-21 19:03:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2021-02-21 19:03:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 776 transitions. [2021-02-21 19:03:09,742 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 776 transitions. Word has length 160 [2021-02-21 19:03:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:03:09,743 INFO L480 AbstractCegarLoop]: Abstraction has 678 states and 776 transitions. [2021-02-21 19:03:09,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 19:03:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 776 transitions. [2021-02-21 19:03:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:03:09,746 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:03:09,746 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 19:03:09,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:03:09,747 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:03:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:03:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash -838787005, now seen corresponding path program 1 times [2021-02-21 19:03:09,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:03:09,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034303624] [2021-02-21 19:03:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:03:09,751 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:03:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:09,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:09,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:03:09,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:09,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:03:09,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:09,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:03:09,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:09,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:03:09,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:09,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,120 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:03:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:03:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:03:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:03:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:03:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:03:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:03:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 19:03:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:03:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:03:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:03:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:10,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:10,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:10,251 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 19:03:10,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034303624] [2021-02-21 19:03:10,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:03:10,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 19:03:10,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215016057] [2021-02-21 19:03:10,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 19:03:10,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:03:10,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 19:03:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:03:10,254 INFO L87 Difference]: Start difference. First operand 678 states and 776 transitions. Second operand 5 states. [2021-02-21 19:03:10,843 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:03:11,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:03:11,683 INFO L93 Difference]: Finished difference Result 1146 states and 1341 transitions. [2021-02-21 19:03:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 19:03:11,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2021-02-21 19:03:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:03:11,690 INFO L225 Difference]: With dead ends: 1146 [2021-02-21 19:03:11,690 INFO L226 Difference]: Without dead ends: 635 [2021-02-21 19:03:11,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:03:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-02-21 19:03:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 613. [2021-02-21 19:03:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2021-02-21 19:03:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 672 transitions. [2021-02-21 19:03:12,021 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 672 transitions. Word has length 165 [2021-02-21 19:03:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:03:12,021 INFO L480 AbstractCegarLoop]: Abstraction has 613 states and 672 transitions. [2021-02-21 19:03:12,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 19:03:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 672 transitions. [2021-02-21 19:03:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-02-21 19:03:12,026 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:03:12,027 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] [2021-02-21 19:03:12,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:03:12,028 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:03:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:03:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1235020703, now seen corresponding path program 1 times [2021-02-21 19:03:12,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:03:12,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111703950] [2021-02-21 19:03:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:03:12,589 WARN L202 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 116 [2021-02-21 19:03:12,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:12,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 263