/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:21:42,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:21:42,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:21:42,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:21:42,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:21:42,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:21:42,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:21:42,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:21:42,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:21:42,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:21:42,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:21:42,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:21:42,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:21:42,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:21:42,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:21:42,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:21:42,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:21:42,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:21:42,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:21:42,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:21:42,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:21:42,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:21:42,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:21:42,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:21:42,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:21:42,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:21:42,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:21:42,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:21:42,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:21:42,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:21:42,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:21:42,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:21:42,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:21:42,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:21:42,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:21:42,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:21:42,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:21:42,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:21:42,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:21:42,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:21:42,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:21:42,342 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 19:21:42,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:21:42,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:21:42,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:21:42,377 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:21:42,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:21:42,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:21:42,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:21:42,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:21:42,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:21:42,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:21:42,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:21:42,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:21:42,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:21:42,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:21:42,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:21:42,383 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:21:42,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:21:42,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:21:42,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:21:42,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:21:42,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:21:42,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:21:42,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:21:42,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:21:42,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:21:42,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:21:42,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:21:42,972 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:21:42,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product28.cil.c [2021-02-21 19:21:43,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370f3e591/82de7deedb6a48299bf6464c520dfba8/FLAG338b0e014 [2021-02-21 19:21:43,808 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:21:43,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product28.cil.c [2021-02-21 19:21:43,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370f3e591/82de7deedb6a48299bf6464c520dfba8/FLAG338b0e014 [2021-02-21 19:21:44,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370f3e591/82de7deedb6a48299bf6464c520dfba8 [2021-02-21 19:21:44,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:21:44,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:21:44,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:21:44,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:21:44,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:21:44,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35654c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44, skipping insertion in model container [2021-02-21 19:21:44,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:21:44,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:21:44,372 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_product28.cil.c[1281,1294] [2021-02-21 19:21:44,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:21:44,543 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:21:44,577 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_product28.cil.c[1281,1294] [2021-02-21 19:21:44,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:21:44,753 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:21:44,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44 WrapperNode [2021-02-21 19:21:44,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:21:44,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:21:44,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:21:44,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:21:44,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (1/1) ... [2021-02-21 19:21:44,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:21:44,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:21:44,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:21:44,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:21:44,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (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 19:21:45,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:21:45,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:21:45,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:21:45,107 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:21:45,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:21:45,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:21:45,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:21:45,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:21:45,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:21:45,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:21:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:21:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:21:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:21:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:21:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:21:45,110 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:21:45,110 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:21:45,110 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:21:45,110 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:21:45,110 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:21:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:21:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:21:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:21:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:21:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:21:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:21:45,112 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:21:45,112 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:21:45,112 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:21:45,112 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:21:45,112 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:21:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:21:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:21:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:21:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:21:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:21:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:21:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:21:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:21:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:21:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:21:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:21:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:21:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:21:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:21:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:21:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:21:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:21:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:21:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:21:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:21:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:21:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:21:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:21:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:21:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:21:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:21:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:21:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:21:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:21:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:21:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:21:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:21:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:21:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:21:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:21:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:21:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:21:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:21:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:21:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:21:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:21:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:21:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:21:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:21:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:21:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:21:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:21:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:21:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:21:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:21:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:21:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:21:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:21:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:21:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:21:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:21:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:21:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:21:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:21:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:21:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:21:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:21:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:21:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:21:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:21:46,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:21:46,840 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:21:46,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:21:46 BoogieIcfgContainer [2021-02-21 19:21:46,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:21:46,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:21:46,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:21:46,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:21:46,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:21:44" (1/3) ... [2021-02-21 19:21:46,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218253d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:21:46, skipping insertion in model container [2021-02-21 19:21:46,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:21:44" (2/3) ... [2021-02-21 19:21:46,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218253d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:21:46, skipping insertion in model container [2021-02-21 19:21:46,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:21:46" (3/3) ... [2021-02-21 19:21:46,855 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product28.cil.c [2021-02-21 19:21:46,863 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:21:46,870 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:21:46,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:21:46,921 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:21:46,921 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:21:46,921 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:21:46,921 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:21:46,922 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:21:46,922 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:21:46,922 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:21:46,922 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:21:46,947 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-21 19:21:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:21:46,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:46,971 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 19:21:46,972 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash 108420034, now seen corresponding path program 1 times [2021-02-21 19:21:46,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:46,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976636624] [2021-02-21 19:21:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:21:47,076 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:21:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:47,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:47,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:47,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:47,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:47,886 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:21:47,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:21:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:48,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:48,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:48,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:21:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:48,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:48,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:21:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:48,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:48,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:48,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:21:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:48,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:48,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:48,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:21:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:48,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:48,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:48,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:21:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:48,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:48,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:21:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:48,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:48,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:48,136 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 19:21:48,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976636624] [2021-02-21 19:21:48,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:21:48,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:21:48,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197814893] [2021-02-21 19:21:48,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:21:48,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:21:48,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:21:48,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:21:48,165 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-21 19:21:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:21:50,101 INFO L93 Difference]: Finished difference Result 442 states and 528 transitions. [2021-02-21 19:21:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:21:50,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:21:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:21:50,125 INFO L225 Difference]: With dead ends: 442 [2021-02-21 19:21:50,125 INFO L226 Difference]: Without dead ends: 281 [2021-02-21 19:21:50,131 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 19:21:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-21 19:21:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2021-02-21 19:21:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-21 19:21:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 258 transitions. [2021-02-21 19:21:50,313 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 258 transitions. Word has length 147 [2021-02-21 19:21:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:21:50,314 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 258 transitions. [2021-02-21 19:21:50,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:21:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 258 transitions. [2021-02-21 19:21:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:21:50,321 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:50,321 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 19:21:50,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:21:50,322 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:50,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:50,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1079958106, now seen corresponding path program 1 times [2021-02-21 19:21:50,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:50,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955052226] [2021-02-21 19:21:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:21:50,329 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:21:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:50,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:50,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:50,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:50,885 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:21:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:21:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:50,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:50,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:21:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:50,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:50,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:21:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:50,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:21:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:50,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:21:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:50,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:21:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:50,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:21:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:50,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:50,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:51,033 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 19:21:51,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955052226] [2021-02-21 19:21:51,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:21:51,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:21:51,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280835229] [2021-02-21 19:21:51,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:21:51,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:21:51,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:21:51,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:21:51,037 INFO L87 Difference]: Start difference. First operand 239 states and 258 transitions. Second operand 4 states. [2021-02-21 19:21:51,916 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:21:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:21:52,905 INFO L93 Difference]: Finished difference Result 348 states and 390 transitions. [2021-02-21 19:21:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:21:52,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:21:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:21:52,911 INFO L225 Difference]: With dead ends: 348 [2021-02-21 19:21:52,911 INFO L226 Difference]: Without dead ends: 264 [2021-02-21 19:21:52,914 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 19:21:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-21 19:21:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2021-02-21 19:21:53,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-21 19:21:53,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 245 transitions. [2021-02-21 19:21:53,063 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 245 transitions. Word has length 148 [2021-02-21 19:21:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:21:53,066 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 245 transitions. [2021-02-21 19:21:53,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:21:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 245 transitions. [2021-02-21 19:21:53,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:21:53,075 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:53,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:21:53,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:21:53,076 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:53,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1968081452, now seen corresponding path program 1 times [2021-02-21 19:21:53,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:53,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198785275] [2021-02-21 19:21:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:21:53,096 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:21:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:53,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:53,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:53,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,646 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:21:53,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:21:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:21:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:21:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:21:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:21:53,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:21:53,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:21:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:21:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:53,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:21:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:21:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:53,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:53,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:53,850 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 19:21:53,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198785275] [2021-02-21 19:21:53,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:21:53,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:21:53,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090873280] [2021-02-21 19:21:53,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:21:53,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:21:53,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:21:53,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:21:53,854 INFO L87 Difference]: Start difference. First operand 229 states and 245 transitions. Second operand 10 states. [2021-02-21 19:21:54,633 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:21:55,128 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:21:55,517 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:21:55,945 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:56,368 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:21:56,808 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:57,997 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:22:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:22:00,389 INFO L93 Difference]: Finished difference Result 608 states and 709 transitions. [2021-02-21 19:22:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:22:00,395 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:22:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:22:00,401 INFO L225 Difference]: With dead ends: 608 [2021-02-21 19:22:00,401 INFO L226 Difference]: Without dead ends: 494 [2021-02-21 19:22:00,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:22:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-02-21 19:22:00,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 403. [2021-02-21 19:22:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-21 19:22:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 449 transitions. [2021-02-21 19:22:00,622 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 449 transitions. Word has length 161 [2021-02-21 19:22:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:22:00,624 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 449 transitions. [2021-02-21 19:22:00,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:22:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 449 transitions. [2021-02-21 19:22:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:22:00,627 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:22:00,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:22:00,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:22:00,629 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:22:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:22:00,630 INFO L82 PathProgramCache]: Analyzing trace with hash 318446111, now seen corresponding path program 1 times [2021-02-21 19:22:00,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:22:00,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707033558] [2021-02-21 19:22:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:22:00,634 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:22:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:00,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:00,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:00,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:00,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:00,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:22:00,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:22:00,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:22:00,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:22:00,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:22:00,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:22:00,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:00,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,177 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:22:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:22:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:01,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:22:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:22:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:01,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:22:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:01,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:22:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:01,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:22:01,316 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:22:01,317 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:22:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:22:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:01,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:22:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:01,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:22:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:01,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:01,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:22:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:01,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:01,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:01,461 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 19:22:01,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707033558] [2021-02-21 19:22:01,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:22:01,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:22:01,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221780617] [2021-02-21 19:22:01,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:22:01,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:22:01,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:22:01,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:22:01,464 INFO L87 Difference]: Start difference. First operand 403 states and 449 transitions. Second operand 14 states. [2021-02-21 19:22:02,188 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:22:02,696 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:22:03,119 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:22:03,537 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:22:03,964 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:22:04,371 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:22:05,244 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:22:06,622 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:22:07,063 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:22:07,716 WARN L202 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:22:08,184 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:22:08,675 WARN L202 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:22:09,091 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:22:09,507 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:22:09,933 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:22:10,340 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:22:10,856 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:22:11,388 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:22:11,835 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:22:12,374 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:22:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:22:14,477 INFO L93 Difference]: Finished difference Result 1343 states and 1650 transitions. [2021-02-21 19:22:14,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:22:14,479 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:22:14,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:22:14,489 INFO L225 Difference]: With dead ends: 1343 [2021-02-21 19:22:14,489 INFO L226 Difference]: Without dead ends: 1055 [2021-02-21 19:22:14,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:22:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-02-21 19:22:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 916. [2021-02-21 19:22:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2021-02-21 19:22:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1058 transitions. [2021-02-21 19:22:14,931 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1058 transitions. Word has length 166 [2021-02-21 19:22:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:22:14,932 INFO L480 AbstractCegarLoop]: Abstraction has 916 states and 1058 transitions. [2021-02-21 19:22:14,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:22:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1058 transitions. [2021-02-21 19:22:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:22:14,937 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:22:14,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:22:14,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:22:14,938 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:22:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:22:14,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1382959547, now seen corresponding path program 1 times [2021-02-21 19:22:14,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:22:14,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301088921] [2021-02-21 19:22:14,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:22:14,943 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:22:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:15,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:15,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:15,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:15,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:15,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:15,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,378 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:22:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:22:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:15,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:22:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:22:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:22:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:22:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:22:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:22:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:22:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:22:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:22:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:22:15,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:15,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:22:15,611 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 19:22:15,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301088921] [2021-02-21 19:22:15,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:22:15,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:22:15,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858651853] [2021-02-21 19:22:15,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:22:15,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:22:15,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:22:15,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:22:15,613 INFO L87 Difference]: Start difference. First operand 916 states and 1058 transitions. Second operand 6 states. [2021-02-21 19:22:16,350 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:22:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:22:17,852 INFO L93 Difference]: Finished difference Result 1559 states and 1878 transitions. [2021-02-21 19:22:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:22:17,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:22:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:22:17,859 INFO L225 Difference]: With dead ends: 1559 [2021-02-21 19:22:17,859 INFO L226 Difference]: Without dead ends: 758 [2021-02-21 19:22:17,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:22:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-02-21 19:22:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 655. [2021-02-21 19:22:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2021-02-21 19:22:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 714 transitions. [2021-02-21 19:22:18,277 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 714 transitions. Word has length 171 [2021-02-21 19:22:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:22:18,278 INFO L480 AbstractCegarLoop]: Abstraction has 655 states and 714 transitions. [2021-02-21 19:22:18,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:22:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 714 transitions. [2021-02-21 19:22:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:22:18,294 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:22:18,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:22:18,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:22:18,295 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:22:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:22:18,296 INFO L82 PathProgramCache]: Analyzing trace with hash -203290286, now seen corresponding path program 1 times [2021-02-21 19:22:18,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:22:18,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681500869] [2021-02-21 19:22:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:22:19,053 WARN L202 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 121 [2021-02-21 19:22:19,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:19,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 284 [2021-02-21 19:22:19,756 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 120 [2021-02-21 19:22:19,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:22:19,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 279