/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 00:44:49,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 00:44:49,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 00:44:49,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 00:44:49,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 00:44:49,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 00:44:49,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 00:44:49,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 00:44:49,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 00:44:49,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 00:44:49,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 00:44:49,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 00:44:49,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 00:44:49,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 00:44:49,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 00:44:49,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 00:44:49,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 00:44:49,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 00:44:49,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 00:44:49,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 00:44:49,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 00:44:49,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 00:44:49,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 00:44:49,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 00:44:49,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 00:44:49,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 00:44:49,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 00:44:49,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 00:44:49,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 00:44:49,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 00:44:49,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 00:44:49,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 00:44:49,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 00:44:49,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 00:44:49,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 00:44:49,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 00:44:49,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 00:44:49,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 00:44:49,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 00:44:49,834 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 00:44:49,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 00:44:49,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 00:44:49,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 00:44:49,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 00:44:49,835 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 00:44:49,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 00:44:49,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 00:44:49,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:44:49,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 00:44:49,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 00:44:49,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 00:44:49,837 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 00:44:49,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 00:44:50,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 00:44:50,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 00:44:50,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 00:44:50,266 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 00:44:50,266 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 00:44:50,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2021-02-22 00:44:50,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c14dcbde/e953b1c9bcf646b4a7ff9c108e48db63/FLAG61c565913 [2021-02-22 00:44:50,919 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 00:44:50,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2021-02-22 00:44:50,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c14dcbde/e953b1c9bcf646b4a7ff9c108e48db63/FLAG61c565913 [2021-02-22 00:44:51,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c14dcbde/e953b1c9bcf646b4a7ff9c108e48db63 [2021-02-22 00:44:51,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 00:44:51,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 00:44:51,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 00:44:51,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 00:44:51,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 00:44:51,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:44:51" (1/1) ... [2021-02-22 00:44:51,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2972814b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:51, skipping insertion in model container [2021-02-22 00:44:51,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:44:51" (1/1) ... [2021-02-22 00:44:51,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 00:44:51,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 00:44:51,645 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_product50.cil.c[5930,5943] [2021-02-22 00:44:51,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:44:51,834 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 00:44:51,904 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_product50.cil.c[5930,5943] [2021-02-22 00:44:51,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:44:52,075 INFO L208 MainTranslator]: Completed translation [2021-02-22 00:44:52,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52 WrapperNode [2021-02-22 00:44:52,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 00:44:52,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 00:44:52,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 00:44:52,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 00:44:52,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (1/1) ... [2021-02-22 00:44:52,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (1/1) ... [2021-02-22 00:44:52,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (1/1) ... [2021-02-22 00:44:52,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (1/1) ... [2021-02-22 00:44:52,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (1/1) ... [2021-02-22 00:44:52,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (1/1) ... [2021-02-22 00:44:52,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (1/1) ... [2021-02-22 00:44:52,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 00:44:52,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 00:44:52,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 00:44:52,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 00:44:52,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (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 [2021-02-22 00:44:52,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 00:44:52,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 00:44:52,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 00:44:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 00:44:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:44:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 00:44:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 00:44:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 00:44:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 00:44:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 00:44:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 00:44:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 00:44:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 00:44:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 00:44:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 00:44:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 00:44:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 00:44:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 00:44:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 00:44:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 00:44:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 00:44:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 00:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 00:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 00:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 00:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 00:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 00:44:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 00:44:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 00:44:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 00:44:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 00:44:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 00:44:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 00:44:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 00:44:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 00:44:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 00:44:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 00:44:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 00:44:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 00:44:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 00:44:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 00:44:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 00:44:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 00:44:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 00:44:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 00:44:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 00:44:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 00:44:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 00:44:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 00:44:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 00:44:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 00:44:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:44:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 00:44:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 00:44:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 00:44:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 00:44:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 00:44:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 00:44:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 00:44:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 00:44:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 00:44:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 00:44:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 00:44:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 00:44:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 00:44:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 00:44:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 00:44:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 00:44:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 00:44:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 00:44:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 00:44:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 00:44:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 00:44:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 00:44:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 00:44:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 00:44:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 00:44:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 00:44:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 00:44:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 00:44:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 00:44:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 00:44:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 00:44:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 00:44:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 00:44:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 00:44:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 00:44:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 00:44:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 00:44:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 00:44:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 00:44:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 00:44:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 00:44:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 00:44:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 00:44:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 00:44:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 00:44:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 00:44:53,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 00:44:53,723 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 00:44:53,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:44:53 BoogieIcfgContainer [2021-02-22 00:44:53,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 00:44:53,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 00:44:53,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 00:44:53,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 00:44:53,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 12:44:51" (1/3) ... [2021-02-22 00:44:53,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0e32f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:44:53, skipping insertion in model container [2021-02-22 00:44:53,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:52" (2/3) ... [2021-02-22 00:44:53,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0e32f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:44:53, skipping insertion in model container [2021-02-22 00:44:53,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:44:53" (3/3) ... [2021-02-22 00:44:53,735 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2021-02-22 00:44:53,741 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 00:44:53,747 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 00:44:53,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 00:44:53,790 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 00:44:53,790 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 00:44:53,790 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 00:44:53,790 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 00:44:53,791 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 00:44:53,791 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 00:44:53,791 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 00:44:53,791 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 00:44:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2021-02-22 00:44:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-22 00:44:53,834 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:53,835 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] [2021-02-22 00:44:53,836 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:53,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1752329087, now seen corresponding path program 1 times [2021-02-22 00:44:53,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:53,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404347676] [2021-02-22 00:44:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:53,952 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:54,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,772 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:54,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:54,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:54,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:54,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:54,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:54,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-22 00:44:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:54,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:54,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:54,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404347676] [2021-02-22 00:44:54,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:54,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 00:44:54,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839023402] [2021-02-22 00:44:55,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 00:44:55,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:55,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 00:44:55,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:44:55,021 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2021-02-22 00:44:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:56,770 INFO L93 Difference]: Finished difference Result 504 states and 596 transitions. [2021-02-22 00:44:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 00:44:56,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-22 00:44:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:56,793 INFO L225 Difference]: With dead ends: 504 [2021-02-22 00:44:56,793 INFO L226 Difference]: Without dead ends: 312 [2021-02-22 00:44:56,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:44:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-22 00:44:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2021-02-22 00:44:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-02-22 00:44:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2021-02-22 00:44:57,057 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 147 [2021-02-22 00:44:57,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:57,058 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2021-02-22 00:44:57,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 00:44:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2021-02-22 00:44:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-22 00:44:57,063 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:57,063 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] [2021-02-22 00:44:57,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 00:44:57,063 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:57,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:57,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1521150489, now seen corresponding path program 1 times [2021-02-22 00:44:57,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:57,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542517279] [2021-02-22 00:44:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:57,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:57,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,500 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:57,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 00:44:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:44:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:57,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542517279] [2021-02-22 00:44:57,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:57,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 00:44:57,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550105107] [2021-02-22 00:44:57,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 00:44:57,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:57,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 00:44:57,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 00:44:57,598 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand 4 states. [2021-02-22 00:44:58,334 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:59,479 INFO L93 Difference]: Finished difference Result 416 states and 466 transitions. [2021-02-22 00:44:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 00:44:59,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-22 00:44:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:59,485 INFO L225 Difference]: With dead ends: 416 [2021-02-22 00:44:59,485 INFO L226 Difference]: Without dead ends: 295 [2021-02-22 00:44:59,488 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 [2021-02-22 00:44:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-22 00:44:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 260. [2021-02-22 00:44:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-22 00:44:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 279 transitions. [2021-02-22 00:44:59,595 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 279 transitions. Word has length 148 [2021-02-22 00:44:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:59,596 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 279 transitions. [2021-02-22 00:44:59,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 00:44:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 279 transitions. [2021-02-22 00:44:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-22 00:44:59,598 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:59,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:59,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 00:44:59,599 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:59,600 INFO L82 PathProgramCache]: Analyzing trace with hash 863357525, now seen corresponding path program 1 times [2021-02-22 00:44:59,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:59,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670054395] [2021-02-22 00:44:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:59,604 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:59,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:59,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:59,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:59,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:59,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:59,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:59,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:59,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:59,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:59,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:44:59,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:59,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:00,041 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:00,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:00,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:00,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:00,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:00,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:00,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:00,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:00,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:00,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:00,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:00,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:45:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:00,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-22 00:45:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:00,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:00,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 00:45:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:00,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:00,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:45:00,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670054395] [2021-02-22 00:45:00,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:00,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:45:00,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464164880] [2021-02-22 00:45:00,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:45:00,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:00,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:45:00,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:45:00,251 INFO L87 Difference]: Start difference. First operand 260 states and 279 transitions. Second operand 10 states. [2021-02-22 00:45:00,854 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:01,320 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:01,706 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:45:02,108 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:02,504 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:45:02,873 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:04,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:04,656 INFO L93 Difference]: Finished difference Result 462 states and 528 transitions. [2021-02-22 00:45:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 00:45:04,659 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-22 00:45:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:04,671 INFO L225 Difference]: With dead ends: 462 [2021-02-22 00:45:04,671 INFO L226 Difference]: Without dead ends: 317 [2021-02-22 00:45:04,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-22 00:45:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-22 00:45:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 260. [2021-02-22 00:45:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-22 00:45:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 278 transitions. [2021-02-22 00:45:04,773 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 278 transitions. Word has length 161 [2021-02-22 00:45:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:04,774 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 278 transitions. [2021-02-22 00:45:04,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:45:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 278 transitions. [2021-02-22 00:45:04,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-22 00:45:04,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:04,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:45:04,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 00:45:04,778 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:04,778 INFO L82 PathProgramCache]: Analyzing trace with hash 974684257, now seen corresponding path program 1 times [2021-02-22 00:45:04,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:04,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461633908] [2021-02-22 00:45:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:04,782 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:04,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:04,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:04,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:04,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:04,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,195 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:45:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:45:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:05,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:05,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:45:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-22 00:45:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-22 00:45:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:05,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:05,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:45:05,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461633908] [2021-02-22 00:45:05,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:05,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 00:45:05,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732956989] [2021-02-22 00:45:05,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 00:45:05,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:05,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 00:45:05,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 00:45:05,359 INFO L87 Difference]: Start difference. First operand 260 states and 278 transitions. Second operand 7 states. [2021-02-22 00:45:06,062 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:07,915 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:09,030 INFO L93 Difference]: Finished difference Result 642 states and 758 transitions. [2021-02-22 00:45:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 00:45:09,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-22 00:45:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:09,039 INFO L225 Difference]: With dead ends: 642 [2021-02-22 00:45:09,039 INFO L226 Difference]: Without dead ends: 497 [2021-02-22 00:45:09,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-22 00:45:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-02-22 00:45:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 370. [2021-02-22 00:45:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2021-02-22 00:45:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 397 transitions. [2021-02-22 00:45:09,243 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 397 transitions. Word has length 174 [2021-02-22 00:45:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:09,244 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 397 transitions. [2021-02-22 00:45:09,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 00:45:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 397 transitions. [2021-02-22 00:45:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-22 00:45:09,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:09,247 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] [2021-02-22 00:45:09,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 00:45:09,247 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash -403932291, now seen corresponding path program 1 times [2021-02-22 00:45:09,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:09,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049241663] [2021-02-22 00:45:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:09,254 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:09,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:09,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:09,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:09,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:45:09,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,625 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:09,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:45:09,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:45:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:45:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:09,749 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-22 00:45:09,750 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-22 00:45:09,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:09,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:09,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-22 00:45:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-22 00:45:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:09,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:09,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:45:09,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049241663] [2021-02-22 00:45:09,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:09,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:45:09,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516051823] [2021-02-22 00:45:09,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:45:09,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:09,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:45:09,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:45:09,876 INFO L87 Difference]: Start difference. First operand 370 states and 397 transitions. Second operand 10 states. [2021-02-22 00:45:10,507 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:11,714 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:12,086 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:45:12,475 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:45:12,842 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:13,246 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-22 00:45:13,603 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:45:15,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:15,986 INFO L93 Difference]: Finished difference Result 1021 states and 1245 transitions. [2021-02-22 00:45:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-22 00:45:15,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2021-02-22 00:45:15,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:15,993 INFO L225 Difference]: With dead ends: 1021 [2021-02-22 00:45:15,994 INFO L226 Difference]: Without dead ends: 766 [2021-02-22 00:45:15,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-02-22 00:45:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-02-22 00:45:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 554. [2021-02-22 00:45:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2021-02-22 00:45:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 608 transitions. [2021-02-22 00:45:16,289 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 608 transitions. Word has length 198 [2021-02-22 00:45:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:16,289 INFO L480 AbstractCegarLoop]: Abstraction has 554 states and 608 transitions. [2021-02-22 00:45:16,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:45:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 608 transitions. [2021-02-22 00:45:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-22 00:45:16,293 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:16,293 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] [2021-02-22 00:45:16,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 00:45:16,293 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:16,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1727190400, now seen corresponding path program 1 times [2021-02-22 00:45:16,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:16,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307273850] [2021-02-22 00:45:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:16,297 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,740 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:45:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:45:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-22 00:45:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:16,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-22 00:45:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:16,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:16,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:45:16,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307273850] [2021-02-22 00:45:16,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:16,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:45:16,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327673162] [2021-02-22 00:45:16,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:45:16,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:16,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:45:16,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:45:16,944 INFO L87 Difference]: Start difference. First operand 554 states and 608 transitions. Second operand 10 states. [2021-02-22 00:45:17,583 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:19,339 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:19,713 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:45:20,096 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:20,478 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:45:20,810 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:21,157 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:21,509 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:22,017 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:24,066 INFO L93 Difference]: Finished difference Result 1755 states and 2154 transitions. [2021-02-22 00:45:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 00:45:24,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2021-02-22 00:45:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:24,076 INFO L225 Difference]: With dead ends: 1755 [2021-02-22 00:45:24,076 INFO L226 Difference]: Without dead ends: 1316 [2021-02-22 00:45:24,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-22 00:45:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-02-22 00:45:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 932. [2021-02-22 00:45:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2021-02-22 00:45:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1031 transitions. [2021-02-22 00:45:24,644 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1031 transitions. Word has length 198 [2021-02-22 00:45:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:24,644 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1031 transitions. [2021-02-22 00:45:24,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:45:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1031 transitions. [2021-02-22 00:45:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-22 00:45:24,648 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:24,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:45:24,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 00:45:24,649 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:24,650 INFO L82 PathProgramCache]: Analyzing trace with hash 640027892, now seen corresponding path program 1 times [2021-02-22 00:45:24,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:24,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80141085] [2021-02-22 00:45:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:24,653 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:24,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:24,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:24,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:24,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:24,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:24,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:24,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:24,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:24,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:24,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,041 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:25,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:45:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:45:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:45:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-22 00:45:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-02-22 00:45:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:25,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:25,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:25,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:25,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:45:25,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80141085] [2021-02-22 00:45:25,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:25,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 00:45:25,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797135620] [2021-02-22 00:45:25,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 00:45:25,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:25,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 00:45:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-22 00:45:25,281 INFO L87 Difference]: Start difference. First operand 932 states and 1031 transitions. Second operand 11 states. [2021-02-22 00:45:25,915 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:27,764 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:28,127 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:28,531 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:45:28,892 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:29,274 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:29,680 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:45:30,059 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:30,506 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:32,184 INFO L93 Difference]: Finished difference Result 1561 states and 1955 transitions. [2021-02-22 00:45:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 00:45:32,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2021-02-22 00:45:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:32,195 INFO L225 Difference]: With dead ends: 1561 [2021-02-22 00:45:32,195 INFO L226 Difference]: Without dead ends: 1558 [2021-02-22 00:45:32,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-02-22 00:45:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-02-22 00:45:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 932. [2021-02-22 00:45:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2021-02-22 00:45:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1029 transitions. [2021-02-22 00:45:32,669 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1029 transitions. Word has length 203 [2021-02-22 00:45:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:32,670 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1029 transitions. [2021-02-22 00:45:32,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 00:45:32,670 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1029 transitions. [2021-02-22 00:45:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-22 00:45:32,675 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:32,675 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] [2021-02-22 00:45:32,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 00:45:32,676 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:32,676 INFO L82 PathProgramCache]: Analyzing trace with hash 414467557, now seen corresponding path program 1 times [2021-02-22 00:45:32,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:32,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83092488] [2021-02-22 00:45:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:32,679 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:32,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:32,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:32,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:32,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,023 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:45:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:45:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:45:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:33,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:33,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:33,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:33,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-22 00:45:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-22 00:45:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:45:33,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83092488] [2021-02-22 00:45:33,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:33,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 00:45:33,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602992976] [2021-02-22 00:45:33,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 00:45:33,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:33,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 00:45:33,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-22 00:45:33,241 INFO L87 Difference]: Start difference. First operand 932 states and 1029 transitions. Second operand 11 states. [2021-02-22 00:45:34,673 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:35,043 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:45:35,427 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-22 00:45:35,794 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:36,180 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:36,520 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:38,743 INFO L93 Difference]: Finished difference Result 2397 states and 2933 transitions. [2021-02-22 00:45:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 00:45:38,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2021-02-22 00:45:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:38,754 INFO L225 Difference]: With dead ends: 2397 [2021-02-22 00:45:38,754 INFO L226 Difference]: Without dead ends: 1580 [2021-02-22 00:45:38,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-22 00:45:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-02-22 00:45:39,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 964. [2021-02-22 00:45:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2021-02-22 00:45:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1061 transitions. [2021-02-22 00:45:39,193 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1061 transitions. Word has length 204 [2021-02-22 00:45:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:39,193 INFO L480 AbstractCegarLoop]: Abstraction has 964 states and 1061 transitions. [2021-02-22 00:45:39,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 00:45:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1061 transitions. [2021-02-22 00:45:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-22 00:45:39,198 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:39,198 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] [2021-02-22 00:45:39,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 00:45:39,198 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash -559402619, now seen corresponding path program 1 times [2021-02-22 00:45:39,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:39,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552654998] [2021-02-22 00:45:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:39,202 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:39,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:39,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,564 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:39,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:39,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:45:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:45:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:45:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:39,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:39,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:39,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-22 00:45:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-22 00:45:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:39,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:39,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:45:39,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552654998] [2021-02-22 00:45:39,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:39,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 00:45:39,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566836251] [2021-02-22 00:45:39,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 00:45:39,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:39,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 00:45:39,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-22 00:45:39,806 INFO L87 Difference]: Start difference. First operand 964 states and 1061 transitions. Second operand 14 states. [2021-02-22 00:45:40,523 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:40,899 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:45:41,292 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:41,699 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:42,063 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:43,074 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:43,431 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:43,806 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:44,178 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:44,521 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:46,830 INFO L93 Difference]: Finished difference Result 2065 states and 2488 transitions. [2021-02-22 00:45:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 00:45:46,830 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2021-02-22 00:45:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:46,838 INFO L225 Difference]: With dead ends: 2065 [2021-02-22 00:45:46,838 INFO L226 Difference]: Without dead ends: 1216 [2021-02-22 00:45:46,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-22 00:45:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-02-22 00:45:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 802. [2021-02-22 00:45:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2021-02-22 00:45:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 861 transitions. [2021-02-22 00:45:47,164 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 861 transitions. Word has length 204 [2021-02-22 00:45:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:47,164 INFO L480 AbstractCegarLoop]: Abstraction has 802 states and 861 transitions. [2021-02-22 00:45:47,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 00:45:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 861 transitions. [2021-02-22 00:45:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-22 00:45:47,168 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:47,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:45:47,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 00:45:47,169 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:47,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:47,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2082010584, now seen corresponding path program 1 times [2021-02-22 00:45:47,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:47,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207284588] [2021-02-22 00:45:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:47,172 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:45:47,239 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:45:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:45:47,301 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:45:47,516 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 00:45:47,516 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 00:45:47,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 00:45:47,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 12:45:47 BoogieIcfgContainer [2021-02-22 00:45:47,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 00:45:47,560 INFO L168 Benchmark]: Toolchain (without parser) took 56299.90 ms. Allocated memory was 152.0 MB in the beginning and 830.5 MB in the end (delta: 678.4 MB). Free memory was 126.6 MB in the beginning and 601.8 MB in the end (delta: -475.3 MB). Peak memory consumption was 203.7 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:47,560 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 137.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 00:45:47,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 804.09 ms. Allocated memory is still 152.0 MB. Free memory was 125.5 MB in the beginning and 133.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:47,560 INFO L168 Benchmark]: Boogie Preprocessor took 187.39 ms. Allocated memory is still 152.0 MB. Free memory was 133.2 MB in the beginning and 129.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:47,561 INFO L168 Benchmark]: RCFGBuilder took 1457.87 ms. Allocated memory is still 152.0 MB. Free memory was 129.2 MB in the beginning and 64.0 MB in the end (delta: 65.3 MB). Peak memory consumption was 68.1 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:47,561 INFO L168 Benchmark]: TraceAbstraction took 53831.41 ms. Allocated memory was 152.0 MB in the beginning and 830.5 MB in the end (delta: 678.4 MB). Free memory was 64.0 MB in the beginning and 601.8 MB in the end (delta: -537.9 MB). Peak memory consumption was 140.5 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:47,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 137.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 804.09 ms. Allocated memory is still 152.0 MB. Free memory was 125.5 MB in the beginning and 133.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 187.39 ms. Allocated memory is still 152.0 MB. Free memory was 133.2 MB in the beginning and 129.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1457.87 ms. Allocated memory is still 152.0 MB. Free memory was 129.2 MB in the beginning and 64.0 MB in the end (delta: 65.3 MB). Peak memory consumption was 68.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 53831.41 ms. Allocated memory was 152.0 MB in the beginning and 830.5 MB in the end (delta: 678.4 MB). Free memory was 64.0 MB in the beginning and 601.8 MB in the end (delta: -537.9 MB). Peak memory consumption was 140.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 390]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L78] int waterLevel = 1; [L79] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L397] int pumpRunning = 0; [L398] int systemActive = 1; [L771] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L260] int retValue_acc ; [L261] int tmp ; [L265] FCALL select_helpers() [L266] FCALL select_features() [L267] CALL, EXPR valid_product() [L309] int retValue_acc ; [L312] retValue_acc = 1 [L313] return (retValue_acc); [L267] RET, EXPR valid_product() [L267] tmp = valid_product() [L269] COND TRUE \read(tmp) [L271] FCALL setup() [L272] CALL runTest() [L251] CALL test() [L320] int splverifierCounter ; [L321] int tmp ; [L322] int tmp___0 ; [L323] int tmp___1 ; [L324] int tmp___2 ; [L327] splverifierCounter = 0 [L329] COND TRUE 1 [L331] COND TRUE splverifierCounter < 4 [L337] tmp = __VERIFIER_nondet_int() [L339] COND TRUE \read(tmp) [L341] CALL waterRise() [L96] COND TRUE waterLevel < 2 [L97] waterLevel = waterLevel + 1 [L341] RET waterRise() [L347] tmp___0 = __VERIFIER_nondet_int() [L349] COND TRUE \read(tmp___0) [L351] CALL changeMethaneLevel() [L108] COND FALSE !(\read(methaneLevelCritical)) [L111] methaneLevelCritical = 1 [L351] RET changeMethaneLevel() [L357] tmp___2 = __VERIFIER_nondet_int() [L359] COND TRUE \read(tmp___2) [L361] CALL startSystem() [L597] systemActive = 1 [L361] RET startSystem() [L374] CALL timeShift() [L404] COND FALSE !(\read(pumpRunning)) [L411] COND TRUE \read(systemActive) [L413] CALL processEnvironment() [L459] int tmp ; [L462] COND FALSE !(\read(pumpRunning)) [L477] CALL processEnvironment__wrappee__highWaterSensor() [L433] int tmp ; [L436] COND TRUE ! pumpRunning [L438] CALL, EXPR isHighWaterLevel() [L556] int retValue_acc ; [L557] int tmp ; [L558] int tmp___0 ; [L562] CALL, EXPR isHighWaterSensorDry() [L158] int retValue_acc ; [L161] COND FALSE !(waterLevel < 2) [L165] retValue_acc = 0 [L166] return (retValue_acc); [L562] RET, EXPR isHighWaterSensorDry() [L562] tmp = isHighWaterSensorDry() [L564] COND FALSE !(\read(tmp)) [L567] tmp___0 = 1 [L569] retValue_acc = tmp___0 [L570] return (retValue_acc); [L438] RET, EXPR isHighWaterLevel() [L438] tmp = isHighWaterLevel() [L440] COND TRUE \read(tmp) [L442] CALL activatePump() [L487] pumpRunning = 1 [L442] RET activatePump() [L477] RET processEnvironment__wrappee__highWaterSensor() [L413] RET processEnvironment() [L419] CALL __utac_acc__Specification1_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR isMethaneLevelCritical() [L117] int retValue_acc ; [L120] retValue_acc = methaneLevelCritical [L121] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L55] CALL, EXPR isPumpRunning() [L511] int retValue_acc ; [L514] retValue_acc = pumpRunning [L515] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L390] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 650 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 44.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2247 SDtfs, 5204 SDslu, 4716 SDs, 0 SdLazy, 9882 SolverSat, 1544 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=964occurred 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: 2.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 2513 StatesRemovedByMinimization, 9 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...