/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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:43:58,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:43:58,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:43:58,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:43:58,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:43:58,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:43:58,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:43:58,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:43:58,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:43:58,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:43:58,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:43:58,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:43:58,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:43:58,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:43:58,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:43:58,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:43:58,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:43:58,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:43:58,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:43:58,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:43:58,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:43:58,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:43:58,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:43:58,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:43:58,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:43:58,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:43:58,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:43:58,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:43:58,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:43:58,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:43:58,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:43:58,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:43:58,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:43:58,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:43:58,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:43:58,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:43:58,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:43:58,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:43:58,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:43:58,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:43:58,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:43:58,110 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 18:43:58,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:43:58,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:43:58,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:43:58,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:43:58,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:43:58,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:43:58,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:43:58,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:43:58,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:43:58,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:43:58,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:43:58,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:43:58,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:43:58,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:43:58,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:43:58,128 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:43:58,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:43:58,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:43:58,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:43:58,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:43:58,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:43:58,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:43:58,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:43:58,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:43:58,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:43:58,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:43:58,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:43:58,520 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:43:58,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2021-02-21 18:43:58,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258603ad9/e3998dc43b00412cab6bc8080905a495/FLAG1c32ebfb1 [2021-02-21 18:43:59,312 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:43:59,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2021-02-21 18:43:59,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258603ad9/e3998dc43b00412cab6bc8080905a495/FLAG1c32ebfb1 [2021-02-21 18:43:59,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258603ad9/e3998dc43b00412cab6bc8080905a495 [2021-02-21 18:43:59,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:43:59,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:43:59,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:43:59,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:43:59,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:43:59,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:43:59" (1/1) ... [2021-02-21 18:43:59,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ca69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:59, skipping insertion in model container [2021-02-21 18:43:59,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:43:59" (1/1) ... [2021-02-21 18:43:59,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:43:59,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:44:00,025 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_product55.cil.c[7599,7612] [2021-02-21 18:44:00,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:44:00,125 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:44:00,173 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_product55.cil.c[7599,7612] [2021-02-21 18:44:00,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:44:00,318 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:44:00,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00 WrapperNode [2021-02-21 18:44:00,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:44:00,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:44:00,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:44:00,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:44:00,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (1/1) ... [2021-02-21 18:44:00,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (1/1) ... [2021-02-21 18:44:00,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (1/1) ... [2021-02-21 18:44:00,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (1/1) ... [2021-02-21 18:44:00,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (1/1) ... [2021-02-21 18:44:00,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (1/1) ... [2021-02-21 18:44:00,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (1/1) ... [2021-02-21 18:44:00,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:44:00,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:44:00,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:44:00,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:44:00,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (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 18:44:00,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:44:00,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:44:00,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:44:00,679 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:44:00,680 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:44:00,680 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:44:00,680 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:44:00,680 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:44:00,680 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:44:00,680 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:44:00,681 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:44:00,681 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:44:00,681 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:44:00,681 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:44:00,681 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:44:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:44:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:44:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:44:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:44:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:44:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:44:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:44:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:44:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:44:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:44:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:44:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:44:00,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:44:00,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:44:00,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:44:00,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:44:00,684 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:44:00,685 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:44:00,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:44:00,685 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:44:00,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:44:00,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:44:00,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:44:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:44:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:44:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:44:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:44:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:44:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:44:00,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:44:00,687 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:44:00,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:44:00,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:44:00,687 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:44:00,687 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:44:00,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:44:00,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:44:00,688 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:44:00,688 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:44:00,688 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:44:00,688 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:44:00,689 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:44:00,689 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:44:00,689 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:44:00,689 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:44:00,689 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:44:00,689 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:44:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:44:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:44:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:44:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:44:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:44:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:44:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:44:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:44:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:44:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:44:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:44:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:44:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:44:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:44:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:44:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:44:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:44:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:44:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:44:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:44:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:44:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:44:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:44:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:44:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:44:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:44:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:44:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:44:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:44:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:44:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:44:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:44:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:44:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:44:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:44:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:44:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:44:00,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:44:02,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:44:02,220 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:44:02,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:44:02 BoogieIcfgContainer [2021-02-21 18:44:02,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:44:02,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:44:02,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:44:02,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:44:02,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:43:59" (1/3) ... [2021-02-21 18:44:02,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:44:02, skipping insertion in model container [2021-02-21 18:44:02,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:44:00" (2/3) ... [2021-02-21 18:44:02,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:44:02, skipping insertion in model container [2021-02-21 18:44:02,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:44:02" (3/3) ... [2021-02-21 18:44:02,231 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2021-02-21 18:44:02,239 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:44:02,245 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:44:02,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:44:02,289 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:44:02,289 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:44:02,290 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:44:02,290 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:44:02,290 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:44:02,290 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:44:02,290 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:44:02,290 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:44:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states. [2021-02-21 18:44:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 18:44:02,338 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:02,339 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 18:44:02,339 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:02,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:02,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2098560608, now seen corresponding path program 1 times [2021-02-21 18:44:02,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:02,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376393439] [2021-02-21 18:44:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:02,450 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:02,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:02,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:02,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:02,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,319 WARN L202 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:03,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:44:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,543 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 18:44:03,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376393439] [2021-02-21 18:44:03,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:03,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:44:03,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062878775] [2021-02-21 18:44:03,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:44:03,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:03,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:44:03,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:44:03,572 INFO L87 Difference]: Start difference. First operand 344 states. Second operand 3 states. [2021-02-21 18:44:05,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:05,618 INFO L93 Difference]: Finished difference Result 551 states and 658 transitions. [2021-02-21 18:44:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:44:05,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 18:44:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:05,637 INFO L225 Difference]: With dead ends: 551 [2021-02-21 18:44:05,638 INFO L226 Difference]: Without dead ends: 337 [2021-02-21 18:44:05,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:44:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-02-21 18:44:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 292. [2021-02-21 18:44:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2021-02-21 18:44:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 321 transitions. [2021-02-21 18:44:05,870 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 321 transitions. Word has length 147 [2021-02-21 18:44:05,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:05,871 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 321 transitions. [2021-02-21 18:44:05,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:44:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 321 transitions. [2021-02-21 18:44:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 18:44:05,879 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:05,879 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 18:44:05,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:44:05,880 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:05,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1759336169, now seen corresponding path program 1 times [2021-02-21 18:44:05,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:05,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169419234] [2021-02-21 18:44:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:05,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:06,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,408 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:44:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:44:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,533 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 18:44:06,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169419234] [2021-02-21 18:44:06,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:06,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:44:06,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004023046] [2021-02-21 18:44:06,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:44:06,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:06,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:44:06,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:44:06,536 INFO L87 Difference]: Start difference. First operand 292 states and 321 transitions. Second operand 4 states. [2021-02-21 18:44:07,249 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:08,670 INFO L93 Difference]: Finished difference Result 461 states and 524 transitions. [2021-02-21 18:44:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:44:08,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 18:44:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:08,685 INFO L225 Difference]: With dead ends: 461 [2021-02-21 18:44:08,685 INFO L226 Difference]: Without dead ends: 320 [2021-02-21 18:44:08,692 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 18:44:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-21 18:44:08,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 282. [2021-02-21 18:44:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-02-21 18:44:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 308 transitions. [2021-02-21 18:44:08,851 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 308 transitions. Word has length 148 [2021-02-21 18:44:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:08,851 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 308 transitions. [2021-02-21 18:44:08,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:44:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 308 transitions. [2021-02-21 18:44:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 18:44:08,855 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:08,855 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 18:44:08,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:44:08,855 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:08,856 INFO L82 PathProgramCache]: Analyzing trace with hash 654950291, now seen corresponding path program 1 times [2021-02-21 18:44:08,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:08,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442234783] [2021-02-21 18:44:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:08,860 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:08,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:08,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:08,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:08,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:08,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:08,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:08,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:08,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:08,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:08,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:08,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:08,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:08,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:08,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:08,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:08,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:09,363 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:09,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:09,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:09,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:44:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:09,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:09,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:09,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:09,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:09,535 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:44:09,536 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:44:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:09,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:09,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:44:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:09,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:44:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:09,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:09,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:09,645 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 18:44:09,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442234783] [2021-02-21 18:44:09,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:09,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:44:09,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776662871] [2021-02-21 18:44:09,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:44:09,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:09,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:44:09,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:44:09,658 INFO L87 Difference]: Start difference. First operand 282 states and 308 transitions. Second operand 9 states. [2021-02-21 18:44:10,429 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:10,881 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:11,236 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:11,622 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:11,987 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:12,348 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:13,385 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:16,408 INFO L93 Difference]: Finished difference Result 751 states and 871 transitions. [2021-02-21 18:44:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:44:16,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 18:44:16,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:16,416 INFO L225 Difference]: With dead ends: 751 [2021-02-21 18:44:16,417 INFO L226 Difference]: Without dead ends: 584 [2021-02-21 18:44:16,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:44:16,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-02-21 18:44:16,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 513. [2021-02-21 18:44:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2021-02-21 18:44:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 579 transitions. [2021-02-21 18:44:16,684 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 579 transitions. Word has length 157 [2021-02-21 18:44:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:16,685 INFO L480 AbstractCegarLoop]: Abstraction has 513 states and 579 transitions. [2021-02-21 18:44:16,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:44:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 579 transitions. [2021-02-21 18:44:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 18:44:16,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:16,689 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 18:44:16,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:44:16,690 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash -54603577, now seen corresponding path program 1 times [2021-02-21 18:44:16,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:16,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283096828] [2021-02-21 18:44:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:16,695 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:16,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:16,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:16,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:16,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:16,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:16,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:16,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:16,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:16,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:16,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:16,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:16,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:16,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:16,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,117 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:17,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:17,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:17,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:17,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:17,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:17,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:44:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:17,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:44:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:17,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:17,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:17,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:44:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:17,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:17,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:17,303 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 18:44:17,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283096828] [2021-02-21 18:44:17,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:17,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:44:17,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353054225] [2021-02-21 18:44:17,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:44:17,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:17,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:44:17,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:44:17,307 INFO L87 Difference]: Start difference. First operand 513 states and 579 transitions. Second operand 9 states. [2021-02-21 18:44:18,114 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:19,487 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:19,898 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:20,444 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:20,828 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:21,537 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:22,016 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:22,436 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:23,151 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:24,683 INFO L93 Difference]: Finished difference Result 1432 states and 1721 transitions. [2021-02-21 18:44:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:44:24,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-21 18:44:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:24,692 INFO L225 Difference]: With dead ends: 1432 [2021-02-21 18:44:24,692 INFO L226 Difference]: Without dead ends: 1034 [2021-02-21 18:44:24,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:44:24,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-02-21 18:44:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 872. [2021-02-21 18:44:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2021-02-21 18:44:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 999 transitions. [2021-02-21 18:44:25,075 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 999 transitions. Word has length 166 [2021-02-21 18:44:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:25,075 INFO L480 AbstractCegarLoop]: Abstraction has 872 states and 999 transitions. [2021-02-21 18:44:25,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:44:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 999 transitions. [2021-02-21 18:44:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 18:44:25,080 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:25,080 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 18:44:25,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:44:25,081 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash 625697653, now seen corresponding path program 1 times [2021-02-21 18:44:25,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:25,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913839224] [2021-02-21 18:44:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:25,085 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,484 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:25,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 18:44:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:44:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:44:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:25,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:25,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:25,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:25,741 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 18:44:25,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913839224] [2021-02-21 18:44:25,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:25,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:44:25,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385268130] [2021-02-21 18:44:25,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:44:25,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:25,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:44:25,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:44:25,746 INFO L87 Difference]: Start difference. First operand 872 states and 999 transitions. Second operand 10 states. [2021-02-21 18:44:26,401 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:28,028 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:28,461 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:28,877 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:29,301 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:29,711 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:30,672 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:31,075 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:31,583 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:33,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:33,423 INFO L93 Difference]: Finished difference Result 2225 states and 2750 transitions. [2021-02-21 18:44:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:44:33,424 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-21 18:44:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:33,439 INFO L225 Difference]: With dead ends: 2225 [2021-02-21 18:44:33,439 INFO L226 Difference]: Without dead ends: 1468 [2021-02-21 18:44:33,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:44:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-02-21 18:44:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1206. [2021-02-21 18:44:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1206 states. [2021-02-21 18:44:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1398 transitions. [2021-02-21 18:44:33,968 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1398 transitions. Word has length 171 [2021-02-21 18:44:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:33,969 INFO L480 AbstractCegarLoop]: Abstraction has 1206 states and 1398 transitions. [2021-02-21 18:44:33,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:44:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1398 transitions. [2021-02-21 18:44:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:44:33,974 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:33,974 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 18:44:33,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:44:33,975 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1968694556, now seen corresponding path program 1 times [2021-02-21 18:44:33,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:33,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644594519] [2021-02-21 18:44:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:33,979 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,347 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:44:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:34,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:34,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:34,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:34,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-21 18:44:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-21 18:44:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:34,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:34,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:34,626 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 18:44:34,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644594519] [2021-02-21 18:44:34,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:34,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:44:34,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117331601] [2021-02-21 18:44:34,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:44:34,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:34,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:44:34,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:44:34,628 INFO L87 Difference]: Start difference. First operand 1206 states and 1398 transitions. Second operand 10 states. [2021-02-21 18:44:36,337 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:36,797 WARN L202 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:37,260 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:44:37,663 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:38,111 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:38,484 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:40,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:40,588 INFO L93 Difference]: Finished difference Result 2701 states and 3311 transitions. [2021-02-21 18:44:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:44:40,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2021-02-21 18:44:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:40,601 INFO L225 Difference]: With dead ends: 2701 [2021-02-21 18:44:40,601 INFO L226 Difference]: Without dead ends: 1610 [2021-02-21 18:44:40,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:44:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-02-21 18:44:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1244. [2021-02-21 18:44:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2021-02-21 18:44:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1438 transitions. [2021-02-21 18:44:41,126 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1438 transitions. Word has length 205 [2021-02-21 18:44:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:41,127 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 1438 transitions. [2021-02-21 18:44:41,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:44:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1438 transitions. [2021-02-21 18:44:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:44:41,131 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:41,132 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 18:44:41,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:44:41,132 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:41,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:41,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1912641348, now seen corresponding path program 1 times [2021-02-21 18:44:41,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:41,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316906307] [2021-02-21 18:44:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:41,136 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:41,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:41,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,548 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:41,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:44:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:41,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:41,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:41,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-21 18:44:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-21 18:44:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:41,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:41,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:41,795 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 18:44:41,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316906307] [2021-02-21 18:44:41,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:41,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 18:44:41,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040999418] [2021-02-21 18:44:41,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 18:44:41,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:41,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 18:44:41,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-21 18:44:41,797 INFO L87 Difference]: Start difference. First operand 1244 states and 1438 transitions. Second operand 13 states. [2021-02-21 18:44:42,526 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:42,926 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:43,315 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:43,705 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:44,073 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:45,218 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:45,592 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:46,005 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:46,407 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:46,760 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:49,015 INFO L93 Difference]: Finished difference Result 2783 states and 3458 transitions. [2021-02-21 18:44:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:44:49,016 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2021-02-21 18:44:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:49,026 INFO L225 Difference]: With dead ends: 2783 [2021-02-21 18:44:49,027 INFO L226 Difference]: Without dead ends: 1654 [2021-02-21 18:44:49,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-21 18:44:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-02-21 18:44:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1268. [2021-02-21 18:44:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2021-02-21 18:44:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1462 transitions. [2021-02-21 18:44:49,570 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1462 transitions. Word has length 205 [2021-02-21 18:44:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:49,570 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 1462 transitions. [2021-02-21 18:44:49,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 18:44:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1462 transitions. [2021-02-21 18:44:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:44:49,575 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:49,575 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 18:44:49,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:44:49,576 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:49,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:49,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1982159457, now seen corresponding path program 1 times [2021-02-21 18:44:49,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:49,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372514569] [2021-02-21 18:44:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:49,579 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:49,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:49,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:49,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:49,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:49,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:44:49,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:49,939 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:49,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:49,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:44:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:49,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:49,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:49,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:44:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:50,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:50,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-21 18:44:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-21 18:44:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:50,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:50,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:50,173 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 18:44:50,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372514569] [2021-02-21 18:44:50,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:50,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:44:50,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698104665] [2021-02-21 18:44:50,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:44:50,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:50,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:44:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:44:50,175 INFO L87 Difference]: Start difference. First operand 1268 states and 1462 transitions. Second operand 7 states. [2021-02-21 18:44:50,901 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:51,626 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:55,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:55,827 INFO L93 Difference]: Finished difference Result 4121 states and 5140 transitions. [2021-02-21 18:44:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:44:55,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2021-02-21 18:44:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:55,848 INFO L225 Difference]: With dead ends: 4121 [2021-02-21 18:44:55,848 INFO L226 Difference]: Without dead ends: 2968 [2021-02-21 18:44:55,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:44:55,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2021-02-21 18:44:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2464. [2021-02-21 18:44:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2464 states. [2021-02-21 18:44:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 2870 transitions. [2021-02-21 18:44:57,216 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 2870 transitions. Word has length 205 [2021-02-21 18:44:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:57,216 INFO L480 AbstractCegarLoop]: Abstraction has 2464 states and 2870 transitions. [2021-02-21 18:44:57,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:44:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 2870 transitions. [2021-02-21 18:44:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 18:44:57,223 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:57,223 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, 1, 1, 1, 1, 1] [2021-02-21 18:44:57,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:44:57,223 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:57,224 INFO L82 PathProgramCache]: Analyzing trace with hash -767151286, now seen corresponding path program 1 times [2021-02-21 18:44:57,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:57,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517920104] [2021-02-21 18:44:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:57,229 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:44:57,329 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:44:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:44:57,404 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:44:57,702 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:44:57,702 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:44:57,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:44:57,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:44:57 BoogieIcfgContainer [2021-02-21 18:44:57,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:44:57,746 INFO L168 Benchmark]: Toolchain (without parser) took 58113.00 ms. Allocated memory was 178.3 MB in the beginning and 876.6 MB in the end (delta: 698.4 MB). Free memory was 153.4 MB in the beginning and 358.7 MB in the end (delta: -205.3 MB). Peak memory consumption was 493.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:57,746 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 178.3 MB. Free memory is still 152.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:44:57,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.71 ms. Allocated memory is still 178.3 MB. Free memory was 152.2 MB in the beginning and 129.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:57,753 INFO L168 Benchmark]: Boogie Preprocessor took 222.54 ms. Allocated memory is still 178.3 MB. Free memory was 129.9 MB in the beginning and 157.7 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:57,754 INFO L168 Benchmark]: RCFGBuilder took 1674.26 ms. Allocated memory is still 178.3 MB. Free memory was 157.7 MB in the beginning and 108.6 MB in the end (delta: 49.1 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:57,754 INFO L168 Benchmark]: TraceAbstraction took 55520.77 ms. Allocated memory was 178.3 MB in the beginning and 876.6 MB in the end (delta: 698.4 MB). Free memory was 108.6 MB in the beginning and 358.7 MB in the end (delta: -250.1 MB). Peak memory consumption was 447.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:57,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 178.3 MB. Free memory is still 152.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 673.71 ms. Allocated memory is still 178.3 MB. Free memory was 152.2 MB in the beginning and 129.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 222.54 ms. Allocated memory is still 178.3 MB. Free memory was 129.9 MB in the beginning and 157.7 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1674.26 ms. Allocated memory is still 178.3 MB. Free memory was 157.7 MB in the beginning and 108.6 MB in the end (delta: 49.1 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 55520.77 ms. Allocated memory was 178.3 MB in the beginning and 876.6 MB in the end (delta: 698.4 MB). Free memory was 108.6 MB in the beginning and 358.7 MB in the end (delta: -250.1 MB). Peak memory consumption was 447.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 508]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L586] int retValue_acc ; [L587] int tmp ; [L591] FCALL select_helpers() [L592] FCALL select_features() [L593] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L593] RET, EXPR valid_product() [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) [L597] FCALL setup() [L598] CALL runTest() [L580] CALL test() [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 [L95] COND TRUE 1 [L97] COND TRUE splverifierCounter < 4 [L103] tmp = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp) [L107] CALL waterRise() [L419] COND TRUE waterLevel < 2 [L420] waterLevel = waterLevel + 1 [L107] RET waterRise() [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND TRUE \read(tmp___0) [L117] CALL changeMethaneLevel() [L431] COND FALSE !(\read(methaneLevelCritical)) [L434] methaneLevelCritical = 1 [L117] RET changeMethaneLevel() [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) [L140] CALL timeShift() [L169] COND FALSE !(\read(pumpRunning)) [L176] COND TRUE \read(systemActive) [L178] CALL processEnvironment() [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L268] CALL processEnvironment__wrappee__lowWaterSensor() [L224] int tmp ; [L227] COND FALSE !(\read(pumpRunning)) [L242] CALL processEnvironment__wrappee__highWaterSensor() [L198] int tmp ; [L201] COND TRUE ! pumpRunning [L203] CALL, EXPR isHighWaterLevel() [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L353] CALL, EXPR isHighWaterSensorDry() [L481] int retValue_acc ; [L484] COND FALSE !(waterLevel < 2) [L488] retValue_acc = 0 [L489] return (retValue_acc); [L353] RET, EXPR isHighWaterSensorDry() [L353] tmp = isHighWaterSensorDry() [L355] COND FALSE !(\read(tmp)) [L358] tmp___0 = 1 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L203] RET, EXPR isHighWaterLevel() [L203] tmp = isHighWaterLevel() [L205] COND TRUE \read(tmp) [L207] CALL activatePump() [L278] pumpRunning = 1 [L207] RET activatePump() [L242] RET processEnvironment__wrappee__highWaterSensor() [L268] RET processEnvironment__wrappee__lowWaterSensor() [L178] RET processEnvironment() [L184] CALL __utac_acc__Specification1_spec__1() [L610] int tmp ; [L611] int tmp___0 ; [L615] CALL, EXPR isMethaneLevelCritical() [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); [L615] RET, EXPR isMethaneLevelCritical() [L615] tmp = isMethaneLevelCritical() [L617] COND TRUE \read(tmp) [L619] CALL, EXPR isPumpRunning() [L302] int retValue_acc ; [L305] retValue_acc = pumpRunning [L306] return (retValue_acc); [L619] RET, EXPR isPumpRunning() [L619] tmp___0 = isPumpRunning() [L621] COND TRUE \read(tmp___0) [L623] CALL __automaton_fail() [L508] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 664 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 44.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2224 SDtfs, 3763 SDslu, 4081 SDs, 0 SdLazy, 9255 SolverSat, 1183 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2464occurred 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: 3.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 1834 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...