/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:43:46,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:43:46,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:43:46,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:43:46,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:43:46,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:43:46,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:43:46,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:43:46,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:43:46,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:43:46,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:43:46,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:43:46,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:43:46,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:43:46,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:43:46,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:43:46,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:43:46,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:43:46,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:43:46,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:43:46,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:43:46,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:43:46,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:43:46,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:43:46,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:43:46,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:43:46,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:43:46,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:43:46,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:43:46,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:43:46,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:43:46,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:43:46,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:43:46,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:43:46,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:43:46,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:43:46,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:43:46,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:43:46,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:43:46,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:43:46,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:43:46,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:43:46,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:43:46,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:43:46,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:43:46,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:43:46,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:43:46,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:43:46,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:43:46,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:43:46,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:43:46,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:43:46,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:43:46,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:43:46,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:43:46,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:43:46,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:43:46,403 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:43:46,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:43:46,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:43:46,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:43:46,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:43:46,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:43:46,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:43:46,405 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:43:46,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:43:46,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:43:46,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:43:46,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:43:46,851 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:43:46,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2021-02-21 18:43:46,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc433ad8/653a4c8657784bc38784d2640e64f61d/FLAG6b91f65ab [2021-02-21 18:43:47,651 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:43:47,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2021-02-21 18:43:47,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc433ad8/653a4c8657784bc38784d2640e64f61d/FLAG6b91f65ab [2021-02-21 18:43:47,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc433ad8/653a4c8657784bc38784d2640e64f61d [2021-02-21 18:43:47,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:43:47,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:43:47,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:43:47,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:43:47,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:43:47,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:43:47" (1/1) ... [2021-02-21 18:43:47,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8518af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:47, skipping insertion in model container [2021-02-21 18:43:47,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:43:47" (1/1) ... [2021-02-21 18:43:47,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:43:47,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:43:48,259 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_product54.cil.c[3492,3505] [2021-02-21 18:43:48,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:43:48,405 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:43:48,453 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_product54.cil.c[3492,3505] [2021-02-21 18:43:48,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:43:48,573 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:43:48,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48 WrapperNode [2021-02-21 18:43:48,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:43:48,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:43:48,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:43:48,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:43:48,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (1/1) ... [2021-02-21 18:43:48,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (1/1) ... [2021-02-21 18:43:48,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (1/1) ... [2021-02-21 18:43:48,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (1/1) ... [2021-02-21 18:43:48,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (1/1) ... [2021-02-21 18:43:48,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (1/1) ... [2021-02-21 18:43:48,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (1/1) ... [2021-02-21 18:43:48,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:43:48,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:43:48,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:43:48,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:43:48,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:43:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:43:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:43:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:43:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:43:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:43:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:43:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:43:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:43:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:43:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:43:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:43:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:43:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:43:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:43:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:43:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:43:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:43:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:43:48,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:43:48,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:43:48,786 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:43:48,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:43:48,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:43:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:43:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:43:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:43:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:43:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:43:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:43:48,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:43:48,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:43:48,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:43:48,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:43:48,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:43:48,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:43:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:43:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:43:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:43:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:43:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:43:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:43:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:43:48,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:43:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:43:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:43:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:43:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:43:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:43:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:43:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:43:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:43:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:43:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:43:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:43:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:43:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:43:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:43:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:43:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:43:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:43:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:43:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:43:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:43:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:43:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:43:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:43:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:43:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:43:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:43:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:43:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:43:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:43:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:43:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:43:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:43:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:43:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:43:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:43:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:43:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:43:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:43:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:43:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:43:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:43:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:43:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:43:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:43:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:43:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:43:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:43:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:43:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:43:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:43:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:43:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:43:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:43:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:43:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:43:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:43:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:43:50,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:43:50,124 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:43:50,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:43:50 BoogieIcfgContainer [2021-02-21 18:43:50,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:43:50,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:43:50,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:43:50,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:43:50,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:43:47" (1/3) ... [2021-02-21 18:43:50,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e78880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:43:50, skipping insertion in model container [2021-02-21 18:43:50,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:48" (2/3) ... [2021-02-21 18:43:50,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e78880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:43:50, skipping insertion in model container [2021-02-21 18:43:50,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:43:50" (3/3) ... [2021-02-21 18:43:50,137 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2021-02-21 18:43:50,144 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:43:50,150 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:43:50,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:43:50,192 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:43:50,193 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:43:50,193 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:43:50,193 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:43:50,193 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:43:50,193 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:43:50,193 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:43:50,193 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:43:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2021-02-21 18:43:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 18:43:50,270 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:50,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:50,271 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1446681479, now seen corresponding path program 1 times [2021-02-21 18:43:50,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:50,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397085436] [2021-02-21 18:43:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:50,371 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:50,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:50,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:50,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:50,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:51,030 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:51,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:51,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:51,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:51,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:51,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:51,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:51,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:51,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:51,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:51,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:51,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:51,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:51,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:51,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:51,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:43:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:51,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:51,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:51,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397085436] [2021-02-21 18:43:51,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:51,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:43:51,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736205099] [2021-02-21 18:43:51,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:43:51,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:51,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:43:51,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:43:51,304 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 3 states. [2021-02-21 18:43:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:53,167 INFO L93 Difference]: Finished difference Result 546 states and 649 transitions. [2021-02-21 18:43:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:43:53,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 18:43:53,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:53,186 INFO L225 Difference]: With dead ends: 546 [2021-02-21 18:43:53,186 INFO L226 Difference]: Without dead ends: 334 [2021-02-21 18:43:53,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:43:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-02-21 18:43:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 290. [2021-02-21 18:43:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2021-02-21 18:43:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 317 transitions. [2021-02-21 18:43:53,382 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 317 transitions. Word has length 147 [2021-02-21 18:43:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:53,383 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 317 transitions. [2021-02-21 18:43:53,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:43:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 317 transitions. [2021-02-21 18:43:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 18:43:53,390 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:53,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:53,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:43:53,391 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1724260367, now seen corresponding path program 1 times [2021-02-21 18:43:53,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:53,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944955778] [2021-02-21 18:43:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:53,397 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:53,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,854 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:43:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:43:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:53,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944955778] [2021-02-21 18:43:53,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:53,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:43:53,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280755673] [2021-02-21 18:43:53,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:43:53,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:53,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:43:53,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:43:53,974 INFO L87 Difference]: Start difference. First operand 290 states and 317 transitions. Second operand 4 states. [2021-02-21 18:43:54,666 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:56,005 INFO L93 Difference]: Finished difference Result 458 states and 519 transitions. [2021-02-21 18:43:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:43:56,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 18:43:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:56,010 INFO L225 Difference]: With dead ends: 458 [2021-02-21 18:43:56,010 INFO L226 Difference]: Without dead ends: 317 [2021-02-21 18:43:56,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:43:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-21 18:43:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 280. [2021-02-21 18:43:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2021-02-21 18:43:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 304 transitions. [2021-02-21 18:43:56,121 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 304 transitions. Word has length 148 [2021-02-21 18:43:56,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:56,122 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 304 transitions. [2021-02-21 18:43:56,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:43:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 304 transitions. [2021-02-21 18:43:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 18:43:56,125 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:56,125 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] [2021-02-21 18:43:56,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:43:56,126 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:56,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1790663320, now seen corresponding path program 1 times [2021-02-21 18:43:56,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:56,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517922948] [2021-02-21 18:43:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:56,131 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:56,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:56,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:56,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,534 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:56,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:56,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:43:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:43:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:43:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:56,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:56,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:56,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517922948] [2021-02-21 18:43:56,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:56,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:43:56,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79902764] [2021-02-21 18:43:56,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:43:56,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:56,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:43:56,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:43:56,719 INFO L87 Difference]: Start difference. First operand 280 states and 304 transitions. Second operand 10 states. [2021-02-21 18:43:57,388 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:57,826 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:58,187 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:43:58,599 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:58,975 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:59,282 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:01,301 INFO L93 Difference]: Finished difference Result 504 states and 581 transitions. [2021-02-21 18:44:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:44:01,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 18:44:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:01,307 INFO L225 Difference]: With dead ends: 504 [2021-02-21 18:44:01,308 INFO L226 Difference]: Without dead ends: 339 [2021-02-21 18:44:01,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:44:01,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-02-21 18:44:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 280. [2021-02-21 18:44:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2021-02-21 18:44:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 303 transitions. [2021-02-21 18:44:01,450 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 303 transitions. Word has length 161 [2021-02-21 18:44:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:01,451 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 303 transitions. [2021-02-21 18:44:01,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:44:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 303 transitions. [2021-02-21 18:44:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-21 18:44:01,454 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:01,455 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] [2021-02-21 18:44:01,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:44:01,455 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:01,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:01,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2112078752, now seen corresponding path program 1 times [2021-02-21 18:44:01,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:01,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636190621] [2021-02-21 18:44:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:01,459 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,839 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:01,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:44:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:44:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:01,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 18:44:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-21 18:44:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:01,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:01,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:44:02,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636190621] [2021-02-21 18:44:02,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:02,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:44:02,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918372981] [2021-02-21 18:44:02,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:44:02,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:02,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:44:02,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:44:02,051 INFO L87 Difference]: Start difference. First operand 280 states and 303 transitions. Second operand 7 states. [2021-02-21 18:44:02,733 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:04,681 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:05,883 INFO L93 Difference]: Finished difference Result 690 states and 818 transitions. [2021-02-21 18:44:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:44:05,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2021-02-21 18:44:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:05,890 INFO L225 Difference]: With dead ends: 690 [2021-02-21 18:44:05,890 INFO L226 Difference]: Without dead ends: 525 [2021-02-21 18:44:05,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:44:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-02-21 18:44:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 398. [2021-02-21 18:44:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2021-02-21 18:44:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 428 transitions. [2021-02-21 18:44:06,105 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 428 transitions. Word has length 179 [2021-02-21 18:44:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:06,106 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 428 transitions. [2021-02-21 18:44:06,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:44:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 428 transitions. [2021-02-21 18:44:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-21 18:44:06,109 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:06,110 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] [2021-02-21 18:44:06,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:44:06,110 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:06,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:06,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1246402926, now seen corresponding path program 1 times [2021-02-21 18:44:06,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:06,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377144009] [2021-02-21 18:44:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:06,115 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:06,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:06,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:06,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:06,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:44:06,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,516 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:44:06,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:44:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:44:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:06,706 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 18:44:06,707 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 18:44:06,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:06,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-21 18:44:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-02-21 18:44:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:06,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:06,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:44:06,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377144009] [2021-02-21 18:44:06,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:06,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:44:06,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436196562] [2021-02-21 18:44:06,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:44:06,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:06,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:44:06,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:44:06,842 INFO L87 Difference]: Start difference. First operand 398 states and 428 transitions. Second operand 10 states. [2021-02-21 18:44:07,518 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:08,879 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:09,277 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:09,673 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:10,100 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:10,562 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:44:10,943 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:13,742 INFO L93 Difference]: Finished difference Result 1084 states and 1318 transitions. [2021-02-21 18:44:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-21 18:44:13,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 203 [2021-02-21 18:44:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:13,757 INFO L225 Difference]: With dead ends: 1084 [2021-02-21 18:44:13,757 INFO L226 Difference]: Without dead ends: 801 [2021-02-21 18:44:13,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:44:13,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-02-21 18:44:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 589. [2021-02-21 18:44:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2021-02-21 18:44:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 646 transitions. [2021-02-21 18:44:14,059 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 646 transitions. Word has length 203 [2021-02-21 18:44:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:14,059 INFO L480 AbstractCegarLoop]: Abstraction has 589 states and 646 transitions. [2021-02-21 18:44:14,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:44:14,060 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 646 transitions. [2021-02-21 18:44:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-21 18:44:14,063 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:14,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:44:14,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:44:14,064 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:14,064 INFO L82 PathProgramCache]: Analyzing trace with hash 555908785, now seen corresponding path program 1 times [2021-02-21 18:44:14,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:14,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855405821] [2021-02-21 18:44:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:14,068 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,426 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:44:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:44:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-21 18:44:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:14,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-02-21 18:44:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:14,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:14,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:44:14,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855405821] [2021-02-21 18:44:14,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:14,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:44:14,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309990348] [2021-02-21 18:44:14,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:44:14,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:14,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:44:14,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:44:14,640 INFO L87 Difference]: Start difference. First operand 589 states and 646 transitions. Second operand 10 states. [2021-02-21 18:44:15,298 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:17,202 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:17,586 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:17,963 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:18,361 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:18,713 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:19,063 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:19,423 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:19,934 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:22,343 INFO L93 Difference]: Finished difference Result 1860 states and 2268 transitions. [2021-02-21 18:44:22,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:44:22,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 203 [2021-02-21 18:44:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:22,354 INFO L225 Difference]: With dead ends: 1860 [2021-02-21 18:44:22,355 INFO L226 Difference]: Without dead ends: 1386 [2021-02-21 18:44:22,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:44:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-02-21 18:44:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1002. [2021-02-21 18:44:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2021-02-21 18:44:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1107 transitions. [2021-02-21 18:44:22,842 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1107 transitions. Word has length 203 [2021-02-21 18:44:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:22,843 INFO L480 AbstractCegarLoop]: Abstraction has 1002 states and 1107 transitions. [2021-02-21 18:44:22,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:44:22,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1107 transitions. [2021-02-21 18:44:22,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-02-21 18:44:22,848 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:22,849 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] [2021-02-21 18:44:22,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:44:22,849 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:22,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1150274546, now seen corresponding path program 1 times [2021-02-21 18:44:22,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:22,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327080705] [2021-02-21 18:44:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:22,854 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:22,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:22,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:22,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:22,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:22,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:22,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:22,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:22,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:22,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:22,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,256 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:44:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:44:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-21 18:44:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 18:44:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:23,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:23,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:23,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:23,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:44:23,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327080705] [2021-02-21 18:44:23,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:23,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:44:23,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822577030] [2021-02-21 18:44:23,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:44:23,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:23,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:44:23,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:44:23,490 INFO L87 Difference]: Start difference. First operand 1002 states and 1107 transitions. Second operand 11 states. [2021-02-21 18:44:24,131 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:26,016 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:26,367 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:26,752 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:27,108 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:27,515 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:27,910 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:44:28,271 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:28,700 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:31,133 INFO L93 Difference]: Finished difference Result 1631 states and 2031 transitions. [2021-02-21 18:44:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 18:44:31,134 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 208 [2021-02-21 18:44:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:31,146 INFO L225 Difference]: With dead ends: 1631 [2021-02-21 18:44:31,147 INFO L226 Difference]: Without dead ends: 1628 [2021-02-21 18:44:31,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-02-21 18:44:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-02-21 18:44:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1002. [2021-02-21 18:44:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2021-02-21 18:44:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1105 transitions. [2021-02-21 18:44:31,624 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1105 transitions. Word has length 208 [2021-02-21 18:44:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:31,625 INFO L480 AbstractCegarLoop]: Abstraction has 1002 states and 1105 transitions. [2021-02-21 18:44:31,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:44:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1105 transitions. [2021-02-21 18:44:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-21 18:44:31,629 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:31,629 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] [2021-02-21 18:44:31,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:44:31,629 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:31,630 INFO L82 PathProgramCache]: Analyzing trace with hash -471540937, now seen corresponding path program 1 times [2021-02-21 18:44:31,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:31,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157445786] [2021-02-21 18:44:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:31,633 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:31,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:31,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:31,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:31,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,010 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:44:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:44:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:32,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:32,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:32,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:32,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:44:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-21 18:44:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:32,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:32,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:44:32,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157445786] [2021-02-21 18:44:32,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:32,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:44:32,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232239250] [2021-02-21 18:44:32,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:44:32,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:32,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:44:32,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:44:32,237 INFO L87 Difference]: Start difference. First operand 1002 states and 1105 transitions. Second operand 11 states. [2021-02-21 18:44:33,716 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:34,080 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:34,456 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:44:34,816 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:35,191 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:35,544 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:37,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:37,978 INFO L93 Difference]: Finished difference Result 2537 states and 3089 transitions. [2021-02-21 18:44:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:44:37,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2021-02-21 18:44:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:37,991 INFO L225 Difference]: With dead ends: 2537 [2021-02-21 18:44:37,991 INFO L226 Difference]: Without dead ends: 1650 [2021-02-21 18:44:37,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:44:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-02-21 18:44:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1034. [2021-02-21 18:44:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2021-02-21 18:44:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1137 transitions. [2021-02-21 18:44:38,576 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1137 transitions. Word has length 209 [2021-02-21 18:44:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:38,577 INFO L480 AbstractCegarLoop]: Abstraction has 1034 states and 1137 transitions. [2021-02-21 18:44:38,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:44:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1137 transitions. [2021-02-21 18:44:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-21 18:44:38,581 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:38,582 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] [2021-02-21 18:44:38,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:44:38,582 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:38,583 INFO L82 PathProgramCache]: Analyzing trace with hash -57909545, now seen corresponding path program 1 times [2021-02-21 18:44:38,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:38,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864143349] [2021-02-21 18:44:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:38,587 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:38,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:38,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:38,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:38,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:38,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:38,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:38,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:38,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:38,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:38,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:38,992 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:38,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:39,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:44:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:44:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:39,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:39,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:39,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:39,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:44:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-21 18:44:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:39,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:39,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:44:39,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864143349] [2021-02-21 18:44:39,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:39,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 18:44:39,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351325859] [2021-02-21 18:44:39,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 18:44:39,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:39,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 18:44:39,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-21 18:44:39,269 INFO L87 Difference]: Start difference. First operand 1034 states and 1137 transitions. Second operand 14 states. [2021-02-21 18:44:40,018 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:40,382 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:40,743 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:41,111 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:41,459 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:42,554 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:42,891 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:43,243 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:43,618 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:43,994 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:46,593 INFO L93 Difference]: Finished difference Result 2201 states and 2644 transitions. [2021-02-21 18:44:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 18:44:46,597 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 209 [2021-02-21 18:44:46,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:46,606 INFO L225 Difference]: With dead ends: 2201 [2021-02-21 18:44:46,606 INFO L226 Difference]: Without dead ends: 1282 [2021-02-21 18:44:46,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-21 18:44:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-02-21 18:44:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 868. [2021-02-21 18:44:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2021-02-21 18:44:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 933 transitions. [2021-02-21 18:44:47,073 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 933 transitions. Word has length 209 [2021-02-21 18:44:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:47,074 INFO L480 AbstractCegarLoop]: Abstraction has 868 states and 933 transitions. [2021-02-21 18:44:47,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 18:44:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 933 transitions. [2021-02-21 18:44:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 18:44:47,077 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:47,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:44:47,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:44:47,077 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1335609132, now seen corresponding path program 1 times [2021-02-21 18:44:47,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:47,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908038683] [2021-02-21 18:44:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:47,083 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:44:47,180 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:44:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:44:47,248 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:44:47,516 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:44:47,516 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:44:47,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:44:47,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:44:47 BoogieIcfgContainer [2021-02-21 18:44:47,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:44:47,560 INFO L168 Benchmark]: Toolchain (without parser) took 59674.44 ms. Allocated memory was 166.7 MB in the beginning and 901.8 MB in the end (delta: 735.1 MB). Free memory was 142.8 MB in the beginning and 387.1 MB in the end (delta: -244.3 MB). Peak memory consumption was 491.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:47,560 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 166.7 MB. Free memory is still 139.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:44:47,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.45 ms. Allocated memory is still 166.7 MB. Free memory was 141.7 MB in the beginning and 119.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:47,561 INFO L168 Benchmark]: Boogie Preprocessor took 92.52 ms. Allocated memory is still 166.7 MB. Free memory was 119.7 MB in the beginning and 115.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:47,562 INFO L168 Benchmark]: RCFGBuilder took 1459.76 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 115.8 MB in the beginning and 131.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:47,562 INFO L168 Benchmark]: TraceAbstraction took 57428.89 ms. Allocated memory was 200.3 MB in the beginning and 901.8 MB in the end (delta: 701.5 MB). Free memory was 131.1 MB in the beginning and 387.1 MB in the end (delta: -255.9 MB). Peak memory consumption was 445.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:47,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 166.7 MB. Free memory is still 139.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 669.45 ms. Allocated memory is still 166.7 MB. Free memory was 141.7 MB in the beginning and 119.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.52 ms. Allocated memory is still 166.7 MB. Free memory was 119.7 MB in the beginning and 115.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1459.76 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 115.8 MB in the beginning and 131.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 57428.89 ms. Allocated memory was 200.3 MB in the beginning and 901.8 MB in the end (delta: 701.5 MB). Free memory was 131.1 MB in the beginning and 387.1 MB in the end (delta: -255.9 MB). Peak memory consumption was 445.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 218]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L231] int pumpRunning = 0; [L232] int systemActive = 1; [L693] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L891] int waterLevel = 1; [L892] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L489] int retValue_acc ; [L492] retValue_acc = 1 [L493] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L148] int splverifierCounter ; [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L152] int tmp___2 ; [L155] splverifierCounter = 0 [L157] COND TRUE 1 [L159] COND TRUE splverifierCounter < 4 [L165] tmp = __VERIFIER_nondet_int() [L167] COND TRUE \read(tmp) [L169] CALL waterRise() [L909] COND TRUE waterLevel < 2 [L910] waterLevel = waterLevel + 1 [L169] RET waterRise() [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND TRUE \read(tmp___0) [L179] CALL changeMethaneLevel() [L921] COND FALSE !(\read(methaneLevelCritical)) [L924] methaneLevelCritical = 1 [L179] RET changeMethaneLevel() [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) [L189] CALL startSystem() [L458] systemActive = 1 [L189] RET startSystem() [L202] CALL timeShift() [L239] COND FALSE !(\read(pumpRunning)) [L246] COND TRUE \read(systemActive) [L248] CALL processEnvironment() [L320] int tmp ; [L323] COND FALSE !(\read(pumpRunning)) [L338] CALL processEnvironment__wrappee__lowWaterSensor() [L294] int tmp ; [L297] COND FALSE !(\read(pumpRunning)) [L312] CALL processEnvironment__wrappee__highWaterSensor() [L268] int tmp ; [L271] COND TRUE ! pumpRunning [L273] CALL, EXPR isHighWaterLevel() [L417] int retValue_acc ; [L418] int tmp ; [L419] int tmp___0 ; [L423] CALL, EXPR isHighWaterSensorDry() [L971] int retValue_acc ; [L974] COND FALSE !(waterLevel < 2) [L978] retValue_acc = 0 [L979] return (retValue_acc); [L423] RET, EXPR isHighWaterSensorDry() [L423] tmp = isHighWaterSensorDry() [L425] COND FALSE !(\read(tmp)) [L428] tmp___0 = 1 [L430] retValue_acc = tmp___0 [L431] return (retValue_acc); [L273] RET, EXPR isHighWaterLevel() [L273] tmp = isHighWaterLevel() [L275] COND TRUE \read(tmp) [L277] CALL activatePump() [L348] pumpRunning = 1 [L277] RET activatePump() [L312] RET processEnvironment__wrappee__highWaterSensor() [L338] RET processEnvironment__wrappee__lowWaterSensor() [L248] RET processEnvironment() [L254] CALL __utac_acc__Specification1_spec__1() [L499] int tmp ; [L500] int tmp___0 ; [L504] CALL, EXPR isMethaneLevelCritical() [L930] int retValue_acc ; [L933] retValue_acc = methaneLevelCritical [L934] return (retValue_acc); [L504] RET, EXPR isMethaneLevelCritical() [L504] tmp = isMethaneLevelCritical() [L506] COND TRUE \read(tmp) [L508] CALL, EXPR isPumpRunning() [L372] int retValue_acc ; [L375] retValue_acc = pumpRunning [L376] return (retValue_acc); [L508] RET, EXPR isPumpRunning() [L508] tmp___0 = isPumpRunning() [L510] COND TRUE \read(tmp___0) [L512] CALL __automaton_fail() [L218] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 662 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 57.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 47.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2410 SDtfs, 5025 SDslu, 4991 SDs, 0 SdLazy, 10707 SolverSat, 1538 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 20.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1034occurred 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: 2.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 2519 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...