/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_spec1_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:09:23,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:09:23,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:09:23,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:09:23,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:09:23,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:09:23,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:09:23,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:09:23,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:09:23,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:09:23,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:09:23,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:09:23,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:09:23,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:09:23,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:09:23,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:09:23,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:09:23,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:09:23,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:09:23,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:09:23,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:09:23,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:09:23,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:09:23,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:09:23,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:09:23,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:09:23,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:09:23,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:09:23,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:09:23,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:09:23,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:09:23,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:09:23,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:09:23,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:09:23,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:09:23,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:09:23,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:09:23,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:09:23,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:09:23,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:09:23,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:09:23,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:09:23,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:09:23,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:09:23,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:09:23,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:09:23,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:09:23,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:09:23,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:09:23,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:09:23,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:09:23,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:09:23,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:09:23,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:09:23,234 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:09:23,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:09:23,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:09:23,235 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:09:23,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:09:23,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:09:23,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:09:23,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:09:23,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:09:23,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:09:23,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:09:23,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:09:23,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:09:23,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:09:23,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:09:23,636 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:09:23,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2021-02-23 16:09:23,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec67425b2/f1ca5fb3dc074e88a4b4c336ab606144/FLAG09949e65d [2021-02-23 16:09:24,440 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:09:24,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2021-02-23 16:09:24,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec67425b2/f1ca5fb3dc074e88a4b4c336ab606144/FLAG09949e65d [2021-02-23 16:09:24,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec67425b2/f1ca5fb3dc074e88a4b4c336ab606144 [2021-02-23 16:09:24,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:09:24,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:09:24,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:09:24,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:09:24,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:09:24,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:09:24" (1/1) ... [2021-02-23 16:09:24,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c4d8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:24, skipping insertion in model container [2021-02-23 16:09:24,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:09:24" (1/1) ... [2021-02-23 16:09:24,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:09:24,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:09:25,146 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_spec1_product41.cil.c[17169,17182] [2021-02-23 16:09:25,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:09:25,173 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:09:25,303 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_spec1_product41.cil.c[17169,17182] [2021-02-23 16:09:25,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:09:25,348 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:09:25,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25 WrapperNode [2021-02-23 16:09:25,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:09:25,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:09:25,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:09:25,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:09:25,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (1/1) ... [2021-02-23 16:09:25,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (1/1) ... [2021-02-23 16:09:25,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (1/1) ... [2021-02-23 16:09:25,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (1/1) ... [2021-02-23 16:09:25,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (1/1) ... [2021-02-23 16:09:25,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (1/1) ... [2021-02-23 16:09:25,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (1/1) ... [2021-02-23 16:09:25,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:09:25,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:09:25,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:09:25,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:09:25,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (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 [2021-02-23 16:09:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:09:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:09:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:09:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:09:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:09:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:09:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:09:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:09:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:09:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:09:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:09:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:09:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:09:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:09:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:09:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:09:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:09:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:09:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:09:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:09:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:09:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:09:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:09:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:09:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:09:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:09:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:09:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:09:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:09:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:09:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:09:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:09:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:09:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:09:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:09:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:09:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:09:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:09:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:09:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:09:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:09:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:09:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:09:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:09:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:09:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:09:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:09:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:09:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:09:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:09:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:09:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:09:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:09:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:09:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:09:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:09:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:09:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:09:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:09:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:09:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:09:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:09:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:09:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:09:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:09:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:09:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:09:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:09:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:09:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:09:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:09:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:09:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:09:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:09:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:09:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:09:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:09:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:09:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:09:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:09:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:09:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:09:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:09:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:09:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:09:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:09:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:09:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:09:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:09:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:09:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:09:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:09:27,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:09:27,311 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:09:27,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:09:27 BoogieIcfgContainer [2021-02-23 16:09:27,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:09:27,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:09:27,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:09:27,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:09:27,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:09:24" (1/3) ... [2021-02-23 16:09:27,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23754218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:09:27, skipping insertion in model container [2021-02-23 16:09:27,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:25" (2/3) ... [2021-02-23 16:09:27,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23754218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:09:27, skipping insertion in model container [2021-02-23 16:09:27,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:09:27" (3/3) ... [2021-02-23 16:09:27,324 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2021-02-23 16:09:27,330 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:09:27,336 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:09:27,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:09:27,379 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:09:27,379 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:09:27,379 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:09:27,380 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:09:27,380 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:09:27,380 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:09:27,380 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:09:27,380 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:09:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states. [2021-02-23 16:09:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:09:27,421 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:27,422 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] [2021-02-23 16:09:27,423 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:27,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:27,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1903071762, now seen corresponding path program 1 times [2021-02-23 16:09:27,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:27,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631278887] [2021-02-23 16:09:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:27,520 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,489 WARN L202 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:09:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:28,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631278887] [2021-02-23 16:09:28,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:28,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:09:28,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099966602] [2021-02-23 16:09:28,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:09:28,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:28,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:09:28,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:09:28,735 INFO L87 Difference]: Start difference. First operand 301 states. Second operand 3 states. [2021-02-23 16:09:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:30,975 INFO L93 Difference]: Finished difference Result 461 states and 547 transitions. [2021-02-23 16:09:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:09:30,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:09:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:30,994 INFO L225 Difference]: With dead ends: 461 [2021-02-23 16:09:30,994 INFO L226 Difference]: Without dead ends: 290 [2021-02-23 16:09:30,999 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 [2021-02-23 16:09:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-23 16:09:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 249. [2021-02-23 16:09:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2021-02-23 16:09:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2021-02-23 16:09:31,135 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 147 [2021-02-23 16:09:31,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:31,136 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2021-02-23 16:09:31,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:09:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2021-02-23 16:09:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:09:31,140 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:31,141 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] [2021-02-23 16:09:31,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:09:31,141 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:31,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1306648680, now seen corresponding path program 1 times [2021-02-23 16:09:31,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:31,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440991933] [2021-02-23 16:09:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:31,147 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:31,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:31,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:31,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:31,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,003 WARN L202 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:09:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:09:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:32,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440991933] [2021-02-23 16:09:32,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:32,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:09:32,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523567783] [2021-02-23 16:09:32,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:09:32,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:32,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:09:32,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:09:32,163 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 4 states. [2021-02-23 16:09:33,413 WARN L202 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:35,059 INFO L93 Difference]: Finished difference Result 377 states and 421 transitions. [2021-02-23 16:09:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:09:35,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:09:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:35,067 INFO L225 Difference]: With dead ends: 377 [2021-02-23 16:09:35,067 INFO L226 Difference]: Without dead ends: 273 [2021-02-23 16:09:35,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:09:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-02-23 16:09:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 239. [2021-02-23 16:09:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-23 16:09:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 256 transitions. [2021-02-23 16:09:35,165 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 256 transitions. Word has length 148 [2021-02-23 16:09:35,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:35,165 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 256 transitions. [2021-02-23 16:09:35,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:09:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 256 transitions. [2021-02-23 16:09:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:09:35,168 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:35,169 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] [2021-02-23 16:09:35,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:09:35,169 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:35,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1303384095, now seen corresponding path program 1 times [2021-02-23 16:09:35,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:35,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533084173] [2021-02-23 16:09:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:35,174 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:35,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:36,029 WARN L202 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:36,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:36,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:36,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:09:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:36,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:36,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:36,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:36,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:36,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:36,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:36,154 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:09:36,155 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:09:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:36,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:36,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:09:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:36,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:36,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:09:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:36,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:36,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:36,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533084173] [2021-02-23 16:09:36,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:36,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:09:36,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129359313] [2021-02-23 16:09:36,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:09:36,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:36,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:09:36,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:09:36,234 INFO L87 Difference]: Start difference. First operand 239 states and 256 transitions. Second operand 9 states. [2021-02-23 16:09:37,340 WARN L202 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:38,172 WARN L202 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:38,973 WARN L202 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:39,703 WARN L202 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:40,458 WARN L202 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:41,215 WARN L202 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:43,513 INFO L93 Difference]: Finished difference Result 397 states and 446 transitions. [2021-02-23 16:09:43,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:09:43,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:09:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:43,520 INFO L225 Difference]: With dead ends: 397 [2021-02-23 16:09:43,520 INFO L226 Difference]: Without dead ends: 273 [2021-02-23 16:09:43,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:09:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-02-23 16:09:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 239. [2021-02-23 16:09:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-23 16:09:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 255 transitions. [2021-02-23 16:09:43,644 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 255 transitions. Word has length 157 [2021-02-23 16:09:43,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:43,644 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 255 transitions. [2021-02-23 16:09:43,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:09:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 255 transitions. [2021-02-23 16:09:43,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:09:43,647 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:43,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:43,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:09:43,648 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:43,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1029755946, now seen corresponding path program 1 times [2021-02-23 16:09:43,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:43,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261392216] [2021-02-23 16:09:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:43,652 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:43,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:43,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:43,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:43,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:43,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:43,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:43,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:43,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:43,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:43,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:43,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:43,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,294 WARN L202 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:09:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:44,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:09:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:09:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:44,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:44,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:44,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261392216] [2021-02-23 16:09:44,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:44,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:09:44,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497274537] [2021-02-23 16:09:44,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:09:44,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:44,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:09:44,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:09:44,453 INFO L87 Difference]: Start difference. First operand 239 states and 255 transitions. Second operand 6 states. [2021-02-23 16:09:45,559 WARN L202 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:48,085 WARN L202 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:49,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:49,280 INFO L93 Difference]: Finished difference Result 519 states and 589 transitions. [2021-02-23 16:09:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:09:49,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2021-02-23 16:09:49,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:49,288 INFO L225 Difference]: With dead ends: 519 [2021-02-23 16:09:49,288 INFO L226 Difference]: Without dead ends: 395 [2021-02-23 16:09:49,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:09:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-23 16:09:49,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 336. [2021-02-23 16:09:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2021-02-23 16:09:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 362 transitions. [2021-02-23 16:09:49,473 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 362 transitions. Word has length 165 [2021-02-23 16:09:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:49,474 INFO L480 AbstractCegarLoop]: Abstraction has 336 states and 362 transitions. [2021-02-23 16:09:49,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:09:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 362 transitions. [2021-02-23 16:09:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-02-23 16:09:49,477 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:49,477 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] [2021-02-23 16:09:49,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:09:49,478 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1009193113, now seen corresponding path program 1 times [2021-02-23 16:09:49,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:49,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398394559] [2021-02-23 16:09:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:49,482 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:49,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:49,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:49,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:49,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:49,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:49,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:49,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:49,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:49,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:49,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,181 WARN L202 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:50,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:50,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:09:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:50,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:50,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:50,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:50,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-23 16:09:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-23 16:09:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:50,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:50,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:50,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398394559] [2021-02-23 16:09:50,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:50,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 16:09:50,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179140972] [2021-02-23 16:09:50,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 16:09:50,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:50,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 16:09:50,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-02-23 16:09:50,464 INFO L87 Difference]: Start difference. First operand 336 states and 362 transitions. Second operand 12 states. [2021-02-23 16:09:51,676 WARN L202 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:52,453 WARN L202 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:53,197 WARN L202 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:53,904 WARN L202 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:54,586 WARN L202 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:56,142 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:56,873 WARN L202 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:57,617 WARN L202 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:58,403 WARN L202 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:59,141 WARN L202 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:01,155 INFO L93 Difference]: Finished difference Result 621 states and 705 transitions. [2021-02-23 16:10:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:10:01,156 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 189 [2021-02-23 16:10:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:01,159 INFO L225 Difference]: With dead ends: 621 [2021-02-23 16:10:01,159 INFO L226 Difference]: Without dead ends: 400 [2021-02-23 16:10:01,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-02-23 16:10:01,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-02-23 16:10:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 342. [2021-02-23 16:10:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2021-02-23 16:10:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 368 transitions. [2021-02-23 16:10:01,293 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 368 transitions. Word has length 189 [2021-02-23 16:10:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:01,293 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 368 transitions. [2021-02-23 16:10:01,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 16:10:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 368 transitions. [2021-02-23 16:10:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-02-23 16:10:01,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:01,297 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] [2021-02-23 16:10:01,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:10:01,297 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash -607496135, now seen corresponding path program 1 times [2021-02-23 16:10:01,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:01,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841568170] [2021-02-23 16:10:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:01,301 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:01,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:01,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:01,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:01,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:01,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:01,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:01,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:01,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:01,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:01,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:01,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:01,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:01,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:01,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,004 WARN L202 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:02,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:10:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-23 16:10:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:02,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:02,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-23 16:10:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:02,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:02,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:02,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841568170] [2021-02-23 16:10:02,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:02,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:10:02,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527393015] [2021-02-23 16:10:02,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:10:02,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:02,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:10:02,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:10:02,208 INFO L87 Difference]: Start difference. First operand 342 states and 368 transitions. Second operand 9 states. [2021-02-23 16:10:03,324 WARN L202 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:05,780 WARN L202 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:06,558 WARN L202 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:07,455 WARN L202 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:08,200 WARN L202 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:09,487 WARN L202 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:10,217 WARN L202 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:10,943 WARN L202 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:11,840 WARN L202 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:13,416 INFO L93 Difference]: Finished difference Result 850 states and 978 transitions. [2021-02-23 16:10:13,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:10:13,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 189 [2021-02-23 16:10:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:13,426 INFO L225 Difference]: With dead ends: 850 [2021-02-23 16:10:13,426 INFO L226 Difference]: Without dead ends: 623 [2021-02-23 16:10:13,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:10:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-02-23 16:10:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 532. [2021-02-23 16:10:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2021-02-23 16:10:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 579 transitions. [2021-02-23 16:10:13,773 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 579 transitions. Word has length 189 [2021-02-23 16:10:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:13,773 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 579 transitions. [2021-02-23 16:10:13,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:10:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 579 transitions. [2021-02-23 16:10:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-23 16:10:13,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:13,777 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] [2021-02-23 16:10:13,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:10:13,778 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:13,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1645791901, now seen corresponding path program 1 times [2021-02-23 16:10:13,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:13,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429865663] [2021-02-23 16:10:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:13,782 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,561 WARN L202 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:14,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:14,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:10:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:14,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-23 16:10:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:10:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:14,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:14,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:14,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:14,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:14,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429865663] [2021-02-23 16:10:14,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:14,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:14,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262645539] [2021-02-23 16:10:14,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:14,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:14,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:14,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:14,790 INFO L87 Difference]: Start difference. First operand 532 states and 579 transitions. Second operand 10 states. [2021-02-23 16:10:15,844 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:18,527 WARN L202 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:19,237 WARN L202 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:20,107 WARN L202 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:22,122 WARN L202 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:22,827 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:23,597 WARN L202 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:24,325 WARN L202 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:25,042 WARN L202 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:25,565 INFO L93 Difference]: Finished difference Result 689 states and 797 transitions. [2021-02-23 16:10:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:10:25,565 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2021-02-23 16:10:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:25,569 INFO L225 Difference]: With dead ends: 689 [2021-02-23 16:10:25,570 INFO L226 Difference]: Without dead ends: 686 [2021-02-23 16:10:25,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:10:25,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-02-23 16:10:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 532. [2021-02-23 16:10:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2021-02-23 16:10:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 578 transitions. [2021-02-23 16:10:25,793 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 578 transitions. Word has length 194 [2021-02-23 16:10:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:25,794 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 578 transitions. [2021-02-23 16:10:25,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 578 transitions. [2021-02-23 16:10:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-23 16:10:25,797 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:25,798 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:25,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:10:25,798 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:25,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2122444853, now seen corresponding path program 1 times [2021-02-23 16:10:25,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:25,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675962416] [2021-02-23 16:10:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:25,802 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,474 WARN L202 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:10:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:26,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:26,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:26,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:26,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:26,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:10:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:10:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 16:10:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-02-23 16:10:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-02-23 16:10:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:26,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:26,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:26,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675962416] [2021-02-23 16:10:26,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:26,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:26,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742841729] [2021-02-23 16:10:26,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:26,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:26,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:26,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:26,762 INFO L87 Difference]: Start difference. First operand 532 states and 578 transitions. Second operand 10 states. [2021-02-23 16:10:28,804 WARN L202 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:29,547 WARN L202 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:30,305 WARN L202 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:10:31,019 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:31,760 WARN L202 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:32,442 WARN L202 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:34,501 INFO L93 Difference]: Finished difference Result 1117 states and 1296 transitions. [2021-02-23 16:10:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:10:34,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 217 [2021-02-23 16:10:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:34,507 INFO L225 Difference]: With dead ends: 1117 [2021-02-23 16:10:34,507 INFO L226 Difference]: Without dead ends: 700 [2021-02-23 16:10:34,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:10:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-02-23 16:10:34,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 548. [2021-02-23 16:10:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2021-02-23 16:10:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 594 transitions. [2021-02-23 16:10:34,735 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 594 transitions. Word has length 217 [2021-02-23 16:10:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:34,736 INFO L480 AbstractCegarLoop]: Abstraction has 548 states and 594 transitions. [2021-02-23 16:10:34,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 594 transitions. [2021-02-23 16:10:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-23 16:10:34,740 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:34,740 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:34,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:10:34,741 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:34,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1090573710, now seen corresponding path program 1 times [2021-02-23 16:10:34,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:34,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42725875] [2021-02-23 16:10:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:34,744 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:34,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:34,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:34,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:34,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:34,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:34,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:34,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:34,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:34,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:34,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:10:34,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:34,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,446 WARN L202 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:10:35,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:10:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:10:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:10:35,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:10:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:10:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 16:10:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-02-23 16:10:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-02-23 16:10:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:35,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42725875] [2021-02-23 16:10:35,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:35,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:10:35,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813743721] [2021-02-23 16:10:35,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:10:35,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:35,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:10:35,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:10:35,679 INFO L87 Difference]: Start difference. First operand 548 states and 594 transitions. Second operand 7 states. [2021-02-23 16:10:36,665 WARN L202 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:37,872 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:41,837 INFO L93 Difference]: Finished difference Result 1552 states and 1840 transitions. [2021-02-23 16:10:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:10:41,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2021-02-23 16:10:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:41,845 INFO L225 Difference]: With dead ends: 1552 [2021-02-23 16:10:41,846 INFO L226 Difference]: Without dead ends: 1119 [2021-02-23 16:10:41,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:10:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-02-23 16:10:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 946. [2021-02-23 16:10:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2021-02-23 16:10:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1058 transitions. [2021-02-23 16:10:42,233 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1058 transitions. Word has length 217 [2021-02-23 16:10:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:42,234 INFO L480 AbstractCegarLoop]: Abstraction has 946 states and 1058 transitions. [2021-02-23 16:10:42,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:10:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1058 transitions. [2021-02-23 16:10:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-02-23 16:10:42,239 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:42,239 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:42,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:10:42,239 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:42,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1936168699, now seen corresponding path program 1 times [2021-02-23 16:10:42,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:42,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114342048] [2021-02-23 16:10:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:42,243 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:42,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:42,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:42,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:42,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:42,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:42,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:42,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:42,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:42,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:42,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:10:42,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:42,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:42,994 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:42,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:43,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:43,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:10:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:10:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:10:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,279 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-23 16:10:43,280 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-23 16:10:43,327 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-23 16:10:43,328 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-23 16:10:43,369 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-23 16:10:43,370 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-23 16:10:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:10:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:43,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:43,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:43,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:10:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:43,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 16:10:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-23 16:10:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-23 16:10:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:43,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114342048] [2021-02-23 16:10:43,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:43,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 16:10:43,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551112311] [2021-02-23 16:10:43,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 16:10:43,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:43,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 16:10:43,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-02-23 16:10:43,665 INFO L87 Difference]: Start difference. First operand 946 states and 1058 transitions. Second operand 20 states. [2021-02-23 16:10:44,845 WARN L202 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:45,810 WARN L202 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:46,591 WARN L202 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:10:47,367 WARN L202 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:48,148 WARN L202 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:48,913 WARN L202 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:50,674 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:53,246 WARN L202 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:54,116 WARN L202 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:10:55,082 WARN L202 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:55,969 WARN L202 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:56,800 WARN L202 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:10:57,656 WARN L202 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:10:58,460 WARN L202 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:59,316 WARN L202 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:11:00,237 WARN L202 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:01,246 WARN L202 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:11:02,110 WARN L202 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:02,978 WARN L202 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:11:04,645 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2021-02-23 16:11:06,326 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 218 DAG size of output: 208 [2021-02-23 16:11:07,849 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2021-02-23 16:11:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:11,213 INFO L93 Difference]: Finished difference Result 1902 states and 2196 transitions. [2021-02-23 16:11:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 16:11:11,214 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 222 [2021-02-23 16:11:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:11,221 INFO L225 Difference]: With dead ends: 1902 [2021-02-23 16:11:11,221 INFO L226 Difference]: Without dead ends: 1071 [2021-02-23 16:11:11,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=497, Invalid=2155, Unknown=0, NotChecked=0, Total=2652 [2021-02-23 16:11:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-02-23 16:11:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 903. [2021-02-23 16:11:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2021-02-23 16:11:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 996 transitions. [2021-02-23 16:11:11,668 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 996 transitions. Word has length 222 [2021-02-23 16:11:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:11,668 INFO L480 AbstractCegarLoop]: Abstraction has 903 states and 996 transitions. [2021-02-23 16:11:11,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 16:11:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 996 transitions. [2021-02-23 16:11:11,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-02-23 16:11:11,673 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:11,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:11,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:11:11,674 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:11,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:11,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1415039513, now seen corresponding path program 1 times [2021-02-23 16:11:11,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:11,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312735633] [2021-02-23 16:11:11,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:12,238 WARN L202 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2021-02-23 16:11:12,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:12,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-02-23 16:11:12,650 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2021-02-23 16:11:12,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:12,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-02-23 16:11:13,084 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2021-02-23 16:11:13,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:13,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-02-23 16:11:13,532 WARN L202 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2021-02-23 16:11:13,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:13,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-02-23 16:11:13,984 WARN L202 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2021-02-23 16:11:13,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:13,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-02-23 16:11:14,425 WARN L202 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2021-02-23 16:11:14,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-02-23 16:11:14,865 WARN L202 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2021-02-23 16:11:14,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-02-23 16:11:15,232 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2021-02-23 16:11:15,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:15,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-02-23 16:11:15,239 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 16:11:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:15,386 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:15,519 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:15,768 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:11:15,769 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:11:15,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 16:11:15,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:11:15 BoogieIcfgContainer [2021-02-23 16:11:15,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:11:15,821 INFO L168 Benchmark]: Toolchain (without parser) took 111050.89 ms. Allocated memory was 155.2 MB in the beginning and 399.5 MB in the end (delta: 244.3 MB). Free memory was 130.6 MB in the beginning and 229.8 MB in the end (delta: -99.2 MB). Peak memory consumption was 145.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:15,821 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:11:15,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.97 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 108.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:15,821 INFO L168 Benchmark]: Boogie Preprocessor took 144.55 ms. Allocated memory is still 155.2 MB. Free memory was 108.9 MB in the beginning and 105.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:15,822 INFO L168 Benchmark]: RCFGBuilder took 1818.97 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 105.0 MB in the beginning and 132.2 MB in the end (delta: -27.2 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:15,822 INFO L168 Benchmark]: TraceAbstraction took 108502.63 ms. Allocated memory was 191.9 MB in the beginning and 399.5 MB in the end (delta: 207.6 MB). Free memory was 132.2 MB in the beginning and 229.8 MB in the end (delta: -97.6 MB). Peak memory consumption was 110.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:15,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 566.97 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 108.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 144.55 ms. Allocated memory is still 155.2 MB. Free memory was 108.9 MB in the beginning and 105.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1818.97 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 105.0 MB in the beginning and 132.2 MB in the end (delta: -27.2 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 108502.63 ms. Allocated memory was 191.9 MB in the beginning and 399.5 MB in the end (delta: 207.6 MB). Free memory was 132.2 MB in the beginning and 229.8 MB in the end (delta: -97.6 MB). Peak memory consumption was 110.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 889]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L482] int waterLevel = 1; [L483] int methaneLevelCritical = 0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L751] int cleanupTimeShifts = 4; [L827] int retValue_acc ; [L828] int tmp ; [L832] FCALL select_helpers() [L833] FCALL select_features() [L834] CALL, EXPR valid_product() [L876] int retValue_acc ; [L879] retValue_acc = 1 [L880] return (retValue_acc); [L834] RET, EXPR valid_product() [L834] tmp = valid_product() [L836] COND TRUE \read(tmp) [L838] FCALL setup() [L839] CALL runTest() [L818] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L500] COND TRUE waterLevel < 2 [L501] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L465] CALL timeShift() [L588] COND FALSE !(\read(pumpRunning)) [L595] COND TRUE \read(systemActive) [L597] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE ! pumpRunning [L622] CALL, EXPR isHighWaterLevel() [L732] int retValue_acc ; [L733] int tmp ; [L734] int tmp___0 ; [L738] CALL, EXPR isHighWaterSensorDry() [L562] int retValue_acc ; [L565] COND FALSE !(waterLevel < 2) [L569] retValue_acc = 0 [L570] return (retValue_acc); [L738] RET, EXPR isHighWaterSensorDry() [L738] tmp = isHighWaterSensorDry() [L740] COND FALSE !(\read(tmp)) [L743] tmp___0 = 1 [L745] retValue_acc = tmp___0 [L746] return (retValue_acc); [L622] RET, EXPR isHighWaterLevel() [L622] tmp = isHighWaterLevel() [L624] COND TRUE \read(tmp) [L626] CALL activatePump() [L651] int tmp ; [L655] CALL, EXPR isMethaneAlarm() [L676] int retValue_acc ; [L680] CALL, EXPR isMethaneLevelCritical() [L521] int retValue_acc ; [L524] retValue_acc = methaneLevelCritical [L525] return (retValue_acc); [L680] RET, EXPR isMethaneLevelCritical() [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); [L655] RET, EXPR isMethaneAlarm() [L655] tmp = isMethaneAlarm() [L657] COND FALSE !(\read(tmp)) [L661] CALL activatePump__wrappee__highWaterSensor() [L645] pumpRunning = 1 [L661] RET activatePump__wrappee__highWaterSensor() [L626] RET activatePump() [L597] RET processEnvironment() [L603] CALL __utac_acc__Specification1_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR isMethaneLevelCritical() [L521] int retValue_acc ; [L524] retValue_acc = methaneLevelCritical [L525] return (retValue_acc); [L900] RET, EXPR isMethaneLevelCritical() [L900] tmp = isMethaneLevelCritical() [L902] COND FALSE !(\read(tmp)) [L603] RET __utac_acc__Specification1_spec__1() [L465] RET timeShift() [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND FALSE !(\read(tmp)) [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp___0) [L444] CALL changeMethaneLevel() [L512] COND FALSE !(\read(methaneLevelCritical)) [L515] methaneLevelCritical = 1 [L444] RET changeMethaneLevel() [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L465] CALL timeShift() [L588] COND TRUE \read(pumpRunning) [L590] CALL lowerWaterLevel() [L488] COND TRUE waterLevel > 0 [L489] waterLevel = waterLevel - 1 [L590] RET lowerWaterLevel() [L595] COND TRUE \read(systemActive) [L597] CALL processEnvironment() [L617] int tmp ; [L620] COND FALSE !(! pumpRunning) [L635] FCALL processEnvironment__wrappee__base() [L597] RET processEnvironment() [L603] CALL __utac_acc__Specification1_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR isMethaneLevelCritical() [L521] int retValue_acc ; [L524] retValue_acc = methaneLevelCritical [L525] return (retValue_acc); [L900] RET, EXPR isMethaneLevelCritical() [L900] tmp = isMethaneLevelCritical() [L902] COND TRUE \read(tmp) [L904] CALL, EXPR isPumpRunning() [L687] int retValue_acc ; [L690] retValue_acc = pumpRunning [L691] return (retValue_acc); [L904] RET, EXPR isPumpRunning() [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) [L908] CALL __automaton_fail() [L889] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 624 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 108.3s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 91.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2484 SDtfs, 4886 SDslu, 5574 SDs, 0 SdLazy, 10510 SolverSat, 1421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 265 SyntacticMatches, 4 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 58.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=946occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 964 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...