/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_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:32:42,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:32:42,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:32:42,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:32:42,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:32:42,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:32:42,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:32:42,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:32:42,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:32:42,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:32:42,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:32:42,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:32:42,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:32:42,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:32:42,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:32:42,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:32:42,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:32:42,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:32:42,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:32:42,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:32:42,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:32:42,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:32:42,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:32:42,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:32:42,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:32:42,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:32:42,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:32:42,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:32:42,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:32:42,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:32:42,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:32:42,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:32:42,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:32:42,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:32:42,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:32:42,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:32:42,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:32:42,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:32:42,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:32:42,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:32:42,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:32:42,835 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 19:32:42,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:32:42,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:32:42,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:32:42,851 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:32:42,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:32:42,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:32:42,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:32:42,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:32:42,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:32:42,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:32:42,852 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:32:42,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:32:42,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:32:42,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:32:42,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:32:42,853 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:32:42,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:32:42,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:32:42,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:32:42,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:32:42,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:32:42,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:32:42,855 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:32:43,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:32:43,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:32:43,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:32:43,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:32:43,273 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:32:43,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2021-02-21 19:32:43,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/869e76cff/d40041128cba4c45b5479a67703b64ed/FLAG58297ae5f [2021-02-21 19:32:43,987 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:32:43,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2021-02-21 19:32:44,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/869e76cff/d40041128cba4c45b5479a67703b64ed/FLAG58297ae5f [2021-02-21 19:32:44,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/869e76cff/d40041128cba4c45b5479a67703b64ed [2021-02-21 19:32:44,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:32:44,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:32:44,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:32:44,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:32:44,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:32:44,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:44,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd28109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44, skipping insertion in model container [2021-02-21 19:32:44,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:44,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:32:44,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:32:44,630 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_product45.cil.c[4942,4955] [2021-02-21 19:32:44,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:32:44,737 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:32:44,772 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_product45.cil.c[4942,4955] [2021-02-21 19:32:44,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:32:44,889 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:32:44,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44 WrapperNode [2021-02-21 19:32:44,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:32:44,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:32:44,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:32:44,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:32:44,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:44,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:44,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:44,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:45,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:45,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:45,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (1/1) ... [2021-02-21 19:32:45,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:32:45,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:32:45,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:32:45,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:32:45,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (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 19:32:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:32:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:32:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:32:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:32:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:32:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:32:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:32:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:32:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:32:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:32:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:32:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:32:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:32:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:32:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:32:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:32:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:32:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:32:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:32:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:32:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:32:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:32:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:32:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:32:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:32:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:32:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:32:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:32:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:32:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:32:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:32:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:32:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:32:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:32:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:32:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:32:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:32:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:32:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:32:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:32:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:32:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:32:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:32:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:32:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:32:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:32:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:32:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:32:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:32:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:32:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:32:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:32:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:32:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:32:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:32:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:32:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:32:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:32:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:32:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:32:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:32:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:32:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:32:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:32:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:32:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:32:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:32:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:32:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:32:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:32:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:32:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:32:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:32:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:32:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:32:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:32:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:32:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:32:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:32:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:32:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:32:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:32:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:32:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:32:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:32:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:32:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:32:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:32:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:32:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:32:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:32:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:32:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:32:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:32:46,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:32:46,715 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:32:46,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:32:46 BoogieIcfgContainer [2021-02-21 19:32:46,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:32:46,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:32:46,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:32:46,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:32:46,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:32:44" (1/3) ... [2021-02-21 19:32:46,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bea32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:32:46, skipping insertion in model container [2021-02-21 19:32:46,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:44" (2/3) ... [2021-02-21 19:32:46,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bea32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:32:46, skipping insertion in model container [2021-02-21 19:32:46,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:32:46" (3/3) ... [2021-02-21 19:32:46,728 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2021-02-21 19:32:46,736 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:32:46,743 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:32:46,764 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:32:46,791 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:32:46,792 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:32:46,792 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:32:46,792 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:32:46,792 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:32:46,793 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:32:46,793 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:32:46,793 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:32:46,827 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states. [2021-02-21 19:32:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:32:46,857 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:46,859 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 19:32:46,859 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash -899485707, now seen corresponding path program 1 times [2021-02-21 19:32:46,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:46,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359495657] [2021-02-21 19:32:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:46,964 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:47,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:47,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:47,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:47,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:47,968 WARN L202 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:47,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:48,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:48,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:48,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:48,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:48,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:48,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:48,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:48,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:48,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:48,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:48,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:48,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:48,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:32:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:48,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:48,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:32:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:48,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:48,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:48,152 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 19:32:48,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359495657] [2021-02-21 19:32:48,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:48,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:32:48,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511483353] [2021-02-21 19:32:48,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:32:48,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:48,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:32:48,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:32:48,185 INFO L87 Difference]: Start difference. First operand 321 states. Second operand 3 states. [2021-02-21 19:32:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:50,111 INFO L93 Difference]: Finished difference Result 503 states and 596 transitions. [2021-02-21 19:32:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:32:50,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:32:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:50,131 INFO L225 Difference]: With dead ends: 503 [2021-02-21 19:32:50,131 INFO L226 Difference]: Without dead ends: 312 [2021-02-21 19:32:50,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:32:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-21 19:32:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 269. [2021-02-21 19:32:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2021-02-21 19:32:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 292 transitions. [2021-02-21 19:32:50,363 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 292 transitions. Word has length 147 [2021-02-21 19:32:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:50,368 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 292 transitions. [2021-02-21 19:32:50,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:32:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 292 transitions. [2021-02-21 19:32:50,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:32:50,386 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:50,386 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 19:32:50,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:32:50,387 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash -604367563, now seen corresponding path program 1 times [2021-02-21 19:32:50,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:50,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071694104] [2021-02-21 19:32:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:50,401 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:50,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:50,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:50,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:50,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:50,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:50,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:50,877 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:50,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:50,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:50,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:50,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:50,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:50,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:51,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:51,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:51,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:51,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:51,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:32:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:51,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:51,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:32:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:51,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:51,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:51,073 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 19:32:51,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071694104] [2021-02-21 19:32:51,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:51,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:32:51,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587683709] [2021-02-21 19:32:51,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:32:51,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:51,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:32:51,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:32:51,083 INFO L87 Difference]: Start difference. First operand 269 states and 292 transitions. Second operand 4 states. [2021-02-21 19:32:51,851 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:53,064 INFO L93 Difference]: Finished difference Result 419 states and 470 transitions. [2021-02-21 19:32:53,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:32:53,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:32:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:53,071 INFO L225 Difference]: With dead ends: 419 [2021-02-21 19:32:53,071 INFO L226 Difference]: Without dead ends: 295 [2021-02-21 19:32:53,074 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 19:32:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-21 19:32:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 259. [2021-02-21 19:32:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-02-21 19:32:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 279 transitions. [2021-02-21 19:32:53,186 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 279 transitions. Word has length 148 [2021-02-21 19:32:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:53,187 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 279 transitions. [2021-02-21 19:32:53,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:32:53,187 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 279 transitions. [2021-02-21 19:32:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:32:53,190 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:53,190 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 19:32:53,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:32:53,191 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash 234964863, now seen corresponding path program 1 times [2021-02-21 19:32:53,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:53,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534271839] [2021-02-21 19:32:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:53,196 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:53,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:53,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:53,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:53,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:53,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:53,681 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:53,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:53,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:53,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:32:53,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:53,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:53,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:53,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:53,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:53,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:53,850 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:32:53,853 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:32:53,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:53,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:53,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:32:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:53,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:32:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:53,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:53,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:53,939 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 19:32:53,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534271839] [2021-02-21 19:32:53,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:53,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:32:53,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245659890] [2021-02-21 19:32:53,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:32:53,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:53,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:32:53,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:32:53,944 INFO L87 Difference]: Start difference. First operand 259 states and 279 transitions. Second operand 9 states. [2021-02-21 19:32:54,678 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:55,117 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:55,501 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:55,899 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:56,283 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:56,673 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:58,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:58,482 INFO L93 Difference]: Finished difference Result 439 states and 495 transitions. [2021-02-21 19:32:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:32:58,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:32:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:58,487 INFO L225 Difference]: With dead ends: 439 [2021-02-21 19:32:58,487 INFO L226 Difference]: Without dead ends: 295 [2021-02-21 19:32:58,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:32:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-21 19:32:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 259. [2021-02-21 19:32:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-02-21 19:32:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 278 transitions. [2021-02-21 19:32:58,590 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 278 transitions. Word has length 157 [2021-02-21 19:32:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:58,591 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 278 transitions. [2021-02-21 19:32:58,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:32:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 278 transitions. [2021-02-21 19:32:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 19:32:58,593 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:58,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:32:58,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:32:58,594 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1249943588, now seen corresponding path program 1 times [2021-02-21 19:32:58,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:58,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691697807] [2021-02-21 19:32:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:58,599 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:58,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:58,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:58,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:58,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:58,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:58,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:58,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:58,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:58,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:58,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:58,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:58,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:58,970 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:32:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:59,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:59,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:59,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 19:32:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 19:32:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:59,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:59,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:59,187 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 19:32:59,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691697807] [2021-02-21 19:32:59,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:59,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:32:59,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980864805] [2021-02-21 19:32:59,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:32:59,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:59,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:32:59,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:32:59,190 INFO L87 Difference]: Start difference. First operand 259 states and 278 transitions. Second operand 6 states. [2021-02-21 19:32:59,793 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:33:01,635 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:33:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:33:02,490 INFO L93 Difference]: Finished difference Result 583 states and 662 transitions. [2021-02-21 19:33:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:33:02,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-21 19:33:02,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:33:02,494 INFO L225 Difference]: With dead ends: 583 [2021-02-21 19:33:02,495 INFO L226 Difference]: Without dead ends: 439 [2021-02-21 19:33:02,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:33:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-02-21 19:33:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 380. [2021-02-21 19:33:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2021-02-21 19:33:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 407 transitions. [2021-02-21 19:33:02,666 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 407 transitions. Word has length 170 [2021-02-21 19:33:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:33:02,667 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 407 transitions. [2021-02-21 19:33:02,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:33:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 407 transitions. [2021-02-21 19:33:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-21 19:33:02,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:33:02,670 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, 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 19:33:02,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:33:02,671 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:33:02,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:33:02,671 INFO L82 PathProgramCache]: Analyzing trace with hash -478895907, now seen corresponding path program 1 times [2021-02-21 19:33:02,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:33:02,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600672348] [2021-02-21 19:33:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:33:02,675 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:33:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:02,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:33:02,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:33:02,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:33:02,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:33:02,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:33:02,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:33:02,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:33:02,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:33:02,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:33:02,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:33:02,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:02,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,138 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:33:03,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:33:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:33:03,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:33:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:33:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:33:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:33:03,229 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:33:03,231 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:33:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:33:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:33:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:33:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:33:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:33:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:33:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-21 19:33:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:33:03,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:33:03,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-21 19:33:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:33:03,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:03,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:33:03,395 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 19:33:03,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600672348] [2021-02-21 19:33:03,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:33:03,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:33:03,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076384814] [2021-02-21 19:33:03,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:33:03,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:33:03,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:33:03,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:33:03,398 INFO L87 Difference]: Start difference. First operand 380 states and 407 transitions. Second operand 14 states. [2021-02-21 19:33:04,032 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:33:04,529 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:33:04,917 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:33:05,316 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:33:05,696 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:33:06,070 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:33:06,894 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:33:08,328 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:33:08,732 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:33:09,178 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:33:09,589 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:33:09,973 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:33:10,373 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:33:10,733 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:33:11,139 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:33:11,641 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:33:12,028 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:33:13,880 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:33:14,287 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:33:14,930 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:33:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:33:15,901 INFO L93 Difference]: Finished difference Result 1141 states and 1344 transitions. [2021-02-21 19:33:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:33:15,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 194 [2021-02-21 19:33:15,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:33:15,909 INFO L225 Difference]: With dead ends: 1141 [2021-02-21 19:33:15,909 INFO L226 Difference]: Without dead ends: 876 [2021-02-21 19:33:15,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:33:15,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-02-21 19:33:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 779. [2021-02-21 19:33:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2021-02-21 19:33:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 861 transitions. [2021-02-21 19:33:16,259 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 861 transitions. Word has length 194 [2021-02-21 19:33:16,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:33:16,260 INFO L480 AbstractCegarLoop]: Abstraction has 779 states and 861 transitions. [2021-02-21 19:33:16,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:33:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 861 transitions. [2021-02-21 19:33:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-02-21 19:33:16,266 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:33:16,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:33:16,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:33:16,268 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:33:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:33:16,268 INFO L82 PathProgramCache]: Analyzing trace with hash -470450563, now seen corresponding path program 1 times [2021-02-21 19:33:16,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:33:16,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490366412] [2021-02-21 19:33:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:33:16,577 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2021-02-21 19:33:16,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:16,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-02-21 19:33:16,775 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2021-02-21 19:33:16,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:33:16,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136