/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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:42:31,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:42:31,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:42:31,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:42:31,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:42:31,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:42:31,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:42:31,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:42:31,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:42:31,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:42:31,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:42:31,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:42:31,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:42:31,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:42:31,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:42:31,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:42:31,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:42:31,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:42:31,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:42:31,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:42:31,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:42:31,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:42:31,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:42:31,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:42:31,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:42:31,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:42:31,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:42:31,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:42:31,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:42:31,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:42:31,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:42:31,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:42:31,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:42:31,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:42:31,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:42:31,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:42:31,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:42:31,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:42:31,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:42:31,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:42:31,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:42:31,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:42:31,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:42:31,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:42:31,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:42:31,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:42:31,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:42:31,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:42:31,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:42:31,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:42:31,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:42:31,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:42:31,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:42:31,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:42:31,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:42:31,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:42:31,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:42:31,747 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:42:31,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:42:31,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:42:31,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:42:31,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:42:31,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:42:31,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:42:31,749 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:42:32,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:42:32,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:42:32,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:42:32,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:42:32,198 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:42:32,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2021-02-21 18:42:32,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982f3d7b6/5d8ef1963d8c4f039e25618bf2a76c7d/FLAG02fa0dcc3 [2021-02-21 18:42:32,958 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:42:32,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2021-02-21 18:42:32,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982f3d7b6/5d8ef1963d8c4f039e25618bf2a76c7d/FLAG02fa0dcc3 [2021-02-21 18:42:33,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982f3d7b6/5d8ef1963d8c4f039e25618bf2a76c7d [2021-02-21 18:42:33,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:42:33,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:42:33,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:42:33,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:42:33,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:42:33,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557032fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33, skipping insertion in model container [2021-02-21 18:42:33,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:42:33,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:42:33,532 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_product39.cil.c[11407,11420] [2021-02-21 18:42:33,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:42:33,662 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:42:33,756 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_product39.cil.c[11407,11420] [2021-02-21 18:42:33,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:42:33,818 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:42:33,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33 WrapperNode [2021-02-21 18:42:33,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:42:33,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:42:33,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:42:33,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:42:33,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (1/1) ... [2021-02-21 18:42:33,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:42:33,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:42:33,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:42:33,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:42:33,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:42:34,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:42:34,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:42:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:42:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:42:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:42:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:42:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:42:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:42:34,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:42:34,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:42:34,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:42:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:42:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:42:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:42:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:42:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:42:34,060 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:42:34,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:42:34,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:42:34,061 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:42:34,063 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:42:34,063 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:42:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:42:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:42:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:42:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:42:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:42:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:42:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:42:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:42:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:42:34,066 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:42:34,066 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:42:34,066 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:42:34,066 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:42:34,066 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:42:34,066 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:42:34,066 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:42:34,067 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:42:34,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:42:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:42:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:42:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:42:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:42:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:42:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:42:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:42:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:42:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:42:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:42:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:42:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:42:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:42:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:42:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:42:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:42:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:42:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:42:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:42:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:42:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:42:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:42:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:42:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:42:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:42:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:42:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:42:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:42:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:42:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:42:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:42:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:42:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:42:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:42:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:42:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:42:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:42:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:42:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:42:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:42:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:42:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:42:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:42:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:42:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:42:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:42:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:42:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:42:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:42:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:42:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:42:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:42:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:42:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:42:35,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:42:35,124 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:42:35,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:42:35 BoogieIcfgContainer [2021-02-21 18:42:35,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:42:35,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:42:35,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:42:35,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:42:35,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:42:33" (1/3) ... [2021-02-21 18:42:35,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751e0cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:42:35, skipping insertion in model container [2021-02-21 18:42:35,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:33" (2/3) ... [2021-02-21 18:42:35,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751e0cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:42:35, skipping insertion in model container [2021-02-21 18:42:35,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:42:35" (3/3) ... [2021-02-21 18:42:35,136 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2021-02-21 18:42:35,143 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:42:35,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:42:35,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:42:35,194 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:42:35,194 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:42:35,194 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:42:35,194 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:42:35,195 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:42:35,195 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:42:35,195 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:42:35,195 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:42:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2021-02-21 18:42:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 18:42:35,238 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:35,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:35,239 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:35,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -128193808, now seen corresponding path program 1 times [2021-02-21 18:42:35,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:35,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136246750] [2021-02-21 18:42:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:35,338 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:35,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:35,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:35,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:35,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:35,993 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:42:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:36,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136246750] [2021-02-21 18:42:36,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:36,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:42:36,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004787543] [2021-02-21 18:42:36,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:42:36,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:36,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:42:36,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:42:36,257 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 3 states. [2021-02-21 18:42:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:37,972 INFO L93 Difference]: Finished difference Result 487 states and 583 transitions. [2021-02-21 18:42:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:42:37,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 18:42:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:37,990 INFO L225 Difference]: With dead ends: 487 [2021-02-21 18:42:37,991 INFO L226 Difference]: Without dead ends: 304 [2021-02-21 18:42:37,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:42:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-02-21 18:42:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 261. [2021-02-21 18:42:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-02-21 18:42:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 285 transitions. [2021-02-21 18:42:38,168 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 285 transitions. Word has length 147 [2021-02-21 18:42:38,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:38,169 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 285 transitions. [2021-02-21 18:42:38,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:42:38,169 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 285 transitions. [2021-02-21 18:42:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 18:42:38,173 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:38,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:38,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:42:38,174 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:38,175 INFO L82 PathProgramCache]: Analyzing trace with hash 179577537, now seen corresponding path program 1 times [2021-02-21 18:42:38,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:38,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236631134] [2021-02-21 18:42:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:38,180 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:38,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:38,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,605 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:38,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:38,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:38,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:38,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:38,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:42:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:38,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:42:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:38,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:38,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:38,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236631134] [2021-02-21 18:42:38,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:38,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:42:38,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480310852] [2021-02-21 18:42:38,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:42:38,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:38,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:42:38,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:42:38,785 INFO L87 Difference]: Start difference. First operand 261 states and 285 transitions. Second operand 4 states. [2021-02-21 18:42:39,503 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:40,572 INFO L93 Difference]: Finished difference Result 397 states and 449 transitions. [2021-02-21 18:42:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:42:40,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 18:42:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:40,577 INFO L225 Difference]: With dead ends: 397 [2021-02-21 18:42:40,577 INFO L226 Difference]: Without dead ends: 287 [2021-02-21 18:42:40,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:42:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-21 18:42:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 251. [2021-02-21 18:42:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2021-02-21 18:42:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 272 transitions. [2021-02-21 18:42:40,676 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 272 transitions. Word has length 148 [2021-02-21 18:42:40,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:40,677 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 272 transitions. [2021-02-21 18:42:40,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:42:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 272 transitions. [2021-02-21 18:42:40,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 18:42:40,679 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:40,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:40,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:42:40,680 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:40,681 INFO L82 PathProgramCache]: Analyzing trace with hash 874068172, now seen corresponding path program 1 times [2021-02-21 18:42:40,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:40,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674004260] [2021-02-21 18:42:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:40,685 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:40,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:40,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:40,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:40,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:40,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:40,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:40,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:40,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:40,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:40,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:40,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:40,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:40,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:40,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:40,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:40,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:41,166 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:41,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:41,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:42:41,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:41,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:41,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:41,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:41,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:41,279 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:42:41,280 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:42:41,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:41,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:41,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:42:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:41,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:42:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:41,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:41,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:41,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674004260] [2021-02-21 18:42:41,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:41,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:42:41,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299038592] [2021-02-21 18:42:41,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:42:41,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:41,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:42:41,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:42:41,352 INFO L87 Difference]: Start difference. First operand 251 states and 272 transitions. Second operand 9 states. [2021-02-21 18:42:41,968 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:42,434 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:42,826 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:42:43,192 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:43,561 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:43,919 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:44,981 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:47,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:47,257 INFO L93 Difference]: Finished difference Result 654 states and 757 transitions. [2021-02-21 18:42:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:42:47,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 18:42:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:47,263 INFO L225 Difference]: With dead ends: 654 [2021-02-21 18:42:47,263 INFO L226 Difference]: Without dead ends: 518 [2021-02-21 18:42:47,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:42:47,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-02-21 18:42:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 451. [2021-02-21 18:42:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2021-02-21 18:42:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 507 transitions. [2021-02-21 18:42:47,512 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 507 transitions. Word has length 157 [2021-02-21 18:42:47,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:47,512 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 507 transitions. [2021-02-21 18:42:47,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:42:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 507 transitions. [2021-02-21 18:42:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 18:42:47,516 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:47,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:47,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:42:47,516 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:47,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:47,517 INFO L82 PathProgramCache]: Analyzing trace with hash 896296946, now seen corresponding path program 1 times [2021-02-21 18:42:47,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:47,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679430580] [2021-02-21 18:42:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:47,521 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:47,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:47,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:47,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:47,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:47,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:47,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:47,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:47,912 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:47,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:47,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:47,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:47,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:47,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:47,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:47,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:47,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:42:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:47,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:47,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:42:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:48,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:48,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:48,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:48,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:48,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:48,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:48,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:42:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:48,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:48,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:48,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679430580] [2021-02-21 18:42:48,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:48,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:42:48,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75456480] [2021-02-21 18:42:48,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:42:48,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:48,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:42:48,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:42:48,092 INFO L87 Difference]: Start difference. First operand 451 states and 507 transitions. Second operand 9 states. [2021-02-21 18:42:48,684 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:49,949 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:50,365 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:50,896 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:51,332 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:51,937 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:52,350 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:52,736 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:53,338 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:54,542 INFO L93 Difference]: Finished difference Result 1238 states and 1493 transitions. [2021-02-21 18:42:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:42:54,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-21 18:42:54,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:54,552 INFO L225 Difference]: With dead ends: 1238 [2021-02-21 18:42:54,553 INFO L226 Difference]: Without dead ends: 902 [2021-02-21 18:42:54,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:42:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-02-21 18:42:54,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 748. [2021-02-21 18:42:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2021-02-21 18:42:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 855 transitions. [2021-02-21 18:42:54,955 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 855 transitions. Word has length 166 [2021-02-21 18:42:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:54,956 INFO L480 AbstractCegarLoop]: Abstraction has 748 states and 855 transitions. [2021-02-21 18:42:54,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:42:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 855 transitions. [2021-02-21 18:42:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 18:42:54,961 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:54,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:54,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:42:54,967 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:54,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:54,968 INFO L82 PathProgramCache]: Analyzing trace with hash -403881658, now seen corresponding path program 1 times [2021-02-21 18:42:54,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:54,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596564560] [2021-02-21 18:42:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:54,977 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,423 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:55,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 18:42:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:42:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:42:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:55,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:55,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:55,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:55,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596564560] [2021-02-21 18:42:55,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:55,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:42:55,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205196111] [2021-02-21 18:42:55,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:42:55,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:55,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:42:55,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:42:55,648 INFO L87 Difference]: Start difference. First operand 748 states and 855 transitions. Second operand 10 states. [2021-02-21 18:42:56,270 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:57,745 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:58,137 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:58,493 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:58,903 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:59,286 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:00,027 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:00,364 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:00,831 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:02,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:02,161 INFO L93 Difference]: Finished difference Result 1945 states and 2414 transitions. [2021-02-21 18:43:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:43:02,162 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-21 18:43:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:02,171 INFO L225 Difference]: With dead ends: 1945 [2021-02-21 18:43:02,171 INFO L226 Difference]: Without dead ends: 1312 [2021-02-21 18:43:02,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:43:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-02-21 18:43:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1050. [2021-02-21 18:43:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2021-02-21 18:43:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1218 transitions. [2021-02-21 18:43:02,704 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1218 transitions. Word has length 171 [2021-02-21 18:43:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:02,704 INFO L480 AbstractCegarLoop]: Abstraction has 1050 states and 1218 transitions. [2021-02-21 18:43:02,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:43:02,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1218 transitions. [2021-02-21 18:43:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:43:02,709 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:02,709 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, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:02,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:43:02,709 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:02,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:02,710 INFO L82 PathProgramCache]: Analyzing trace with hash 293155834, now seen corresponding path program 1 times [2021-02-21 18:43:02,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:02,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889605821] [2021-02-21 18:43:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:02,713 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:02,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:02,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:02,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:02,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:02,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:02,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:02,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:02,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:02,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:02,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,079 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:03,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:03,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:43:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:03,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:03,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:43:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:03,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:03,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:43:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:43:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:43:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:03,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:03,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:03,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889605821] [2021-02-21 18:43:03,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:03,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 18:43:03,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710326287] [2021-02-21 18:43:03,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 18:43:03,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 18:43:03,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-21 18:43:03,325 INFO L87 Difference]: Start difference. First operand 1050 states and 1218 transitions. Second operand 13 states. [2021-02-21 18:43:04,039 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:04,408 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:43:04,770 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:05,131 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:05,424 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:06,458 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:06,814 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:07,205 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:07,631 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:07,934 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:09,893 INFO L93 Difference]: Finished difference Result 2401 states and 3010 transitions. [2021-02-21 18:43:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:43:09,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2021-02-21 18:43:09,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:09,904 INFO L225 Difference]: With dead ends: 2401 [2021-02-21 18:43:09,904 INFO L226 Difference]: Without dead ends: 1466 [2021-02-21 18:43:09,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-21 18:43:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-02-21 18:43:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1080. [2021-02-21 18:43:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2021-02-21 18:43:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1250 transitions. [2021-02-21 18:43:10,398 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1250 transitions. Word has length 200 [2021-02-21 18:43:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:10,399 INFO L480 AbstractCegarLoop]: Abstraction has 1080 states and 1250 transitions. [2021-02-21 18:43:10,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 18:43:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1250 transitions. [2021-02-21 18:43:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:43:10,404 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:10,404 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, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:10,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:43:10,404 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:10,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1267026010, now seen corresponding path program 1 times [2021-02-21 18:43:10,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:10,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334126396] [2021-02-21 18:43:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:10,408 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,743 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:10,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:43:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:10,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:10,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:10,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:10,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:43:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:43:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:43:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:43:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:11,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334126396] [2021-02-21 18:43:11,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:11,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:43:11,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049763645] [2021-02-21 18:43:11,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:43:11,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:43:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:43:11,081 INFO L87 Difference]: Start difference. First operand 1080 states and 1250 transitions. Second operand 10 states. [2021-02-21 18:43:12,572 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:12,964 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:43:13,342 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:43:13,720 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:14,128 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:14,476 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:15,946 INFO L93 Difference]: Finished difference Result 2443 states and 2999 transitions. [2021-02-21 18:43:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:43:15,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2021-02-21 18:43:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:15,956 INFO L225 Difference]: With dead ends: 2443 [2021-02-21 18:43:15,957 INFO L226 Difference]: Without dead ends: 1478 [2021-02-21 18:43:15,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:43:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-02-21 18:43:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1112. [2021-02-21 18:43:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2021-02-21 18:43:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1282 transitions. [2021-02-21 18:43:16,484 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1282 transitions. Word has length 200 [2021-02-21 18:43:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:16,485 INFO L480 AbstractCegarLoop]: Abstraction has 1112 states and 1282 transitions. [2021-02-21 18:43:16,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:43:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1282 transitions. [2021-02-21 18:43:16,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:43:16,491 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:16,491 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, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:16,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:43:16,491 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:16,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:16,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1347138147, now seen corresponding path program 1 times [2021-02-21 18:43:16,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:16,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761737941] [2021-02-21 18:43:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:16,499 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:16,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:16,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:16,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:16,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:43:16,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,862 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:43:16,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:43:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:16,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:16,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:43:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:43:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:43:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:17,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:17,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:17,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:43:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:17,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:17,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:17,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761737941] [2021-02-21 18:43:17,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:17,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:43:17,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778930602] [2021-02-21 18:43:17,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:43:17,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:17,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:43:17,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:43:17,084 INFO L87 Difference]: Start difference. First operand 1112 states and 1282 transitions. Second operand 7 states. [2021-02-21 18:43:17,665 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:18,332 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:22,066 INFO L93 Difference]: Finished difference Result 3769 states and 4716 transitions. [2021-02-21 18:43:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:43:22,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2021-02-21 18:43:22,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:22,082 INFO L225 Difference]: With dead ends: 3769 [2021-02-21 18:43:22,083 INFO L226 Difference]: Without dead ends: 2772 [2021-02-21 18:43:22,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:43:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2021-02-21 18:43:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2268. [2021-02-21 18:43:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2268 states. [2021-02-21 18:43:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 2638 transitions. [2021-02-21 18:43:22,986 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 2638 transitions. Word has length 200 [2021-02-21 18:43:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:22,987 INFO L480 AbstractCegarLoop]: Abstraction has 2268 states and 2638 transitions. [2021-02-21 18:43:22,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:43:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 2638 transitions. [2021-02-21 18:43:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:43:22,992 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:22,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:22,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:43:22,992 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:22,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2093121546, now seen corresponding path program 1 times [2021-02-21 18:43:22,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:22,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166577296] [2021-02-21 18:43:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:22,996 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:43:23,065 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:43:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:43:23,132 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:43:23,349 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:43:23,349 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:43:23,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:43:23,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:43:23 BoogieIcfgContainer [2021-02-21 18:43:23,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:43:23,394 INFO L168 Benchmark]: Toolchain (without parser) took 50186.65 ms. Allocated memory was 157.3 MB in the beginning and 936.4 MB in the end (delta: 779.1 MB). Free memory was 132.2 MB in the beginning and 409.7 MB in the end (delta: -277.5 MB). Peak memory consumption was 502.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:23,397 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:43:23,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.16 ms. Allocated memory is still 157.3 MB. Free memory was 130.9 MB in the beginning and 110.2 MB in the end (delta: 20.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:23,398 INFO L168 Benchmark]: Boogie Preprocessor took 108.89 ms. Allocated memory is still 157.3 MB. Free memory was 110.2 MB in the beginning and 106.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:23,410 INFO L168 Benchmark]: RCFGBuilder took 1185.79 ms. Allocated memory is still 157.3 MB. Free memory was 106.3 MB in the beginning and 84.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:23,410 INFO L168 Benchmark]: TraceAbstraction took 48263.10 ms. Allocated memory was 157.3 MB in the beginning and 936.4 MB in the end (delta: 779.1 MB). Free memory was 84.8 MB in the beginning and 409.7 MB in the end (delta: -324.8 MB). Peak memory consumption was 453.8 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:23,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 600.16 ms. Allocated memory is still 157.3 MB. Free memory was 130.9 MB in the beginning and 110.2 MB in the end (delta: 20.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.89 ms. Allocated memory is still 157.3 MB. Free memory was 110.2 MB in the beginning and 106.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1185.79 ms. Allocated memory is still 157.3 MB. Free memory was 106.3 MB in the beginning and 84.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48263.10 ms. Allocated memory was 157.3 MB in the beginning and 936.4 MB in the end (delta: 779.1 MB). Free memory was 84.8 MB in the beginning and 409.7 MB in the end (delta: -324.8 MB). Peak memory consumption was 453.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 441]: 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; [L452] int waterLevel = 1; [L453] int methaneLevelCritical = 0; [L619] int pumpRunning = 0; [L620] int systemActive = 1; [L850] int cleanupTimeShifts = 4; [L923] int retValue_acc ; [L924] int tmp ; [L928] FCALL select_helpers() [L929] FCALL select_features() [L930] CALL, EXPR valid_product() [L841] int retValue_acc ; [L844] retValue_acc = 1 [L845] return (retValue_acc); [L930] RET, EXPR valid_product() [L930] tmp = valid_product() [L932] COND TRUE \read(tmp) [L934] FCALL setup() [L935] CALL runTest() [L917] CALL test() [L550] int splverifierCounter ; [L551] int tmp ; [L552] int tmp___0 ; [L553] int tmp___1 ; [L554] int tmp___2 ; [L557] splverifierCounter = 0 [L559] COND TRUE 1 [L561] COND TRUE splverifierCounter < 4 [L567] tmp = __VERIFIER_nondet_int() [L569] COND TRUE \read(tmp) [L571] CALL waterRise() [L470] COND TRUE waterLevel < 2 [L471] waterLevel = waterLevel + 1 [L571] RET waterRise() [L577] tmp___0 = __VERIFIER_nondet_int() [L579] COND TRUE \read(tmp___0) [L581] CALL changeMethaneLevel() [L482] COND FALSE !(\read(methaneLevelCritical)) [L485] methaneLevelCritical = 1 [L581] RET changeMethaneLevel() [L587] tmp___2 = __VERIFIER_nondet_int() [L589] COND TRUE \read(tmp___2) [L604] CALL timeShift() [L626] COND FALSE !(\read(pumpRunning)) [L633] COND TRUE \read(systemActive) [L635] CALL processEnvironment() [L681] int tmp ; [L684] COND FALSE !(\read(pumpRunning)) [L699] CALL processEnvironment__wrappee__highWaterSensor() [L655] int tmp ; [L658] COND TRUE ! pumpRunning [L660] CALL, EXPR isHighWaterLevel() [L778] int retValue_acc ; [L779] int tmp ; [L780] int tmp___0 ; [L784] CALL, EXPR isHighWaterSensorDry() [L532] int retValue_acc ; [L535] COND FALSE !(waterLevel < 2) [L539] retValue_acc = 0 [L540] return (retValue_acc); [L784] RET, EXPR isHighWaterSensorDry() [L784] tmp = isHighWaterSensorDry() [L786] COND FALSE !(\read(tmp)) [L789] tmp___0 = 1 [L791] retValue_acc = tmp___0 [L792] return (retValue_acc); [L660] RET, EXPR isHighWaterLevel() [L660] tmp = isHighWaterLevel() [L662] COND TRUE \read(tmp) [L664] CALL activatePump() [L709] pumpRunning = 1 [L664] RET activatePump() [L699] RET processEnvironment__wrappee__highWaterSensor() [L635] RET processEnvironment() [L641] CALL __utac_acc__Specification1_spec__1() [L412] int tmp ; [L413] int tmp___0 ; [L417] CALL, EXPR isMethaneLevelCritical() [L491] int retValue_acc ; [L494] retValue_acc = methaneLevelCritical [L495] return (retValue_acc); [L417] RET, EXPR isMethaneLevelCritical() [L417] tmp = isMethaneLevelCritical() [L419] COND TRUE \read(tmp) [L421] CALL, EXPR isPumpRunning() [L733] int retValue_acc ; [L736] retValue_acc = pumpRunning [L737] return (retValue_acc); [L421] RET, EXPR isPumpRunning() [L421] tmp___0 = isPumpRunning() [L423] COND TRUE \read(tmp___0) [L425] CALL __automaton_fail() [L441] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 633 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1993 SDtfs, 3558 SDslu, 3860 SDs, 0 SdLazy, 7952 SolverSat, 1117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2268occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1818 StatesRemovedByMinimization, 8 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...