/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_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:58:05,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:58:05,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:58:05,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:58:05,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:58:05,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:58:05,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:58:05,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:58:05,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:58:05,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:58:05,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:58:05,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:58:05,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:58:05,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:58:05,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:58:05,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:58:05,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:58:05,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:58:05,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:58:05,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:58:05,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:58:05,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:58:05,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:58:05,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:58:05,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:58:05,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:58:05,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:58:05,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:58:05,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:58:05,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:58:05,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:58:05,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:58:05,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:58:05,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:58:05,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:58:05,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:58:05,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:58:05,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:58:05,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:58:05,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:58:05,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:58:05,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:58:05,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:58:05,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:58:05,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:58:05,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:58:05,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:58:05,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:58:05,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:58:05,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:58:05,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:58:05,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:58:05,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:58:05,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:58:05,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:58:05,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:58:05,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:58:05,945 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:58:05,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:58:05,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:58:05,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:58:05,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:58:05,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:58:05,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:58:05,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:58:06,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:58:06,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:58:06,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:58:06,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:58:06,372 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:58:06,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-10-23 19:58:06,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0358c6e7a/a2c92e2caca646d695aad562da7c30f4/FLAGb5764d8ea [2020-10-23 19:58:07,280 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:58:07,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-10-23 19:58:07,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0358c6e7a/a2c92e2caca646d695aad562da7c30f4/FLAGb5764d8ea [2020-10-23 19:58:07,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0358c6e7a/a2c92e2caca646d695aad562da7c30f4 [2020-10-23 19:58:07,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:58:07,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:58:07,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:58:07,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:58:07,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:58:07,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:58:07" (1/1) ... [2020-10-23 19:58:07,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66995bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:07, skipping insertion in model container [2020-10-23 19:58:07,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:58:07" (1/1) ... [2020-10-23 19:58:07,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:58:07,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:58:08,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:58:08,066 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:58:08,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:58:08,268 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:58:08,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08 WrapperNode [2020-10-23 19:58:08,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:58:08,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:58:08,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:58:08,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:58:08,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (1/1) ... [2020-10-23 19:58:08,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (1/1) ... [2020-10-23 19:58:08,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (1/1) ... [2020-10-23 19:58:08,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (1/1) ... [2020-10-23 19:58:08,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (1/1) ... [2020-10-23 19:58:08,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (1/1) ... [2020-10-23 19:58:08,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (1/1) ... [2020-10-23 19:58:08,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:58:08,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:58:08,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:58:08,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:58:08,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (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 [2020-10-23 19:58:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:58:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:58:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:58:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:58:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:58:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:58:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:58:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:58:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:58:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:58:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:58:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:58:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:58:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:58:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:58:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:58:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:58:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:58:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:58:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:58:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:58:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:58:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:58:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:58:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:58:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:58:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:58:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:58:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:58:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:58:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:58:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:58:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:58:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:58:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:58:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:58:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:58:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:58:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:58:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:58:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:58:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:58:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:58:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:58:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:58:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:58:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:58:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:58:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:58:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:58:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:58:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:58:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:58:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:58:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:58:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:58:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:58:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:58:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:58:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:58:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:58:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:58:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:58:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:58:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:58:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:58:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:58:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:58:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:58:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:58:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:58:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:58:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:58:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:58:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:58:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:58:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:58:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:58:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:58:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:58:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:58:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:58:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:58:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:58:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:58:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:58:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:58:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:58:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:58:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:58:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:58:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:58:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:58:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:58:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:58:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:58:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:58:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:58:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:58:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:58:10,503 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:58:10,504 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:58:10,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:58:10 BoogieIcfgContainer [2020-10-23 19:58:10,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:58:10,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:58:10,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:58:10,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:58:10,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:58:07" (1/3) ... [2020-10-23 19:58:10,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b5e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:58:10, skipping insertion in model container [2020-10-23 19:58:10,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:08" (2/3) ... [2020-10-23 19:58:10,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b5e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:58:10, skipping insertion in model container [2020-10-23 19:58:10,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:58:10" (3/3) ... [2020-10-23 19:58:10,516 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-10-23 19:58:10,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:58:10,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:58:10,548 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:58:10,572 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:58:10,572 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:58:10,572 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:58:10,572 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:58:10,573 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:58:10,573 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:58:10,573 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:58:10,573 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:58:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states. [2020-10-23 19:58:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:58:10,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:10,623 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] [2020-10-23 19:58:10,623 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash -583941026, now seen corresponding path program 1 times [2020-10-23 19:58:10,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:10,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868688625] [2020-10-23 19:58:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:10,729 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:11,819 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:11,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:11,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:11,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:58:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:58:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:58:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:12,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868688625] [2020-10-23 19:58:12,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:12,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:58:12,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413263487] [2020-10-23 19:58:12,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:58:12,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:12,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:58:12,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:58:12,034 INFO L87 Difference]: Start difference. First operand 356 states. Second operand 3 states. [2020-10-23 19:58:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:14,119 INFO L93 Difference]: Finished difference Result 572 states and 678 transitions. [2020-10-23 19:58:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:58:14,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:58:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:14,139 INFO L225 Difference]: With dead ends: 572 [2020-10-23 19:58:14,139 INFO L226 Difference]: Without dead ends: 346 [2020-10-23 19:58:14,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:58:14,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-23 19:58:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 302. [2020-10-23 19:58:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-23 19:58:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 330 transitions. [2020-10-23 19:58:14,380 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 330 transitions. Word has length 159 [2020-10-23 19:58:14,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:14,383 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 330 transitions. [2020-10-23 19:58:14,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:58:14,383 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 330 transitions. [2020-10-23 19:58:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:58:14,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:14,396 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] [2020-10-23 19:58:14,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:58:14,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:14,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1059555123, now seen corresponding path program 1 times [2020-10-23 19:58:14,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:14,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66133221] [2020-10-23 19:58:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:14,404 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:14,948 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:15,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:58:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:58:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:58:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:15,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66133221] [2020-10-23 19:58:15,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:15,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:58:15,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245790932] [2020-10-23 19:58:15,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:58:15,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:15,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:58:15,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:58:15,079 INFO L87 Difference]: Start difference. First operand 302 states and 330 transitions. Second operand 4 states. [2020-10-23 19:58:15,886 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:17,432 INFO L93 Difference]: Finished difference Result 482 states and 545 transitions. [2020-10-23 19:58:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:58:17,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:58:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:17,438 INFO L225 Difference]: With dead ends: 482 [2020-10-23 19:58:17,439 INFO L226 Difference]: Without dead ends: 329 [2020-10-23 19:58:17,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:58:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-23 19:58:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 292. [2020-10-23 19:58:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-23 19:58:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 317 transitions. [2020-10-23 19:58:17,559 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 317 transitions. Word has length 160 [2020-10-23 19:58:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:17,560 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 317 transitions. [2020-10-23 19:58:17,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:58:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 317 transitions. [2020-10-23 19:58:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:58:17,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:17,563 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] [2020-10-23 19:58:17,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:58:17,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:17,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:17,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1708581516, now seen corresponding path program 1 times [2020-10-23 19:58:17,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:17,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551567021] [2020-10-23 19:58:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:17,569 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,060 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:58:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:58:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:58:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:58:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:18,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551567021] [2020-10-23 19:58:18,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:18,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:58:18,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295143884] [2020-10-23 19:58:18,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:58:18,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:18,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:58:18,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:58:18,225 INFO L87 Difference]: Start difference. First operand 292 states and 317 transitions. Second operand 10 states. [2020-10-23 19:58:18,966 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:19,435 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:58:19,849 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:58:20,228 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:20,629 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:21,018 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:23,458 INFO L93 Difference]: Finished difference Result 528 states and 607 transitions. [2020-10-23 19:58:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:58:23,459 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:58:23,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:23,464 INFO L225 Difference]: With dead ends: 528 [2020-10-23 19:58:23,465 INFO L226 Difference]: Without dead ends: 351 [2020-10-23 19:58:23,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:58:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-23 19:58:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 292. [2020-10-23 19:58:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-23 19:58:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 316 transitions. [2020-10-23 19:58:23,575 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 316 transitions. Word has length 173 [2020-10-23 19:58:23,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:23,576 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 316 transitions. [2020-10-23 19:58:23,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:58:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 316 transitions. [2020-10-23 19:58:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-23 19:58:23,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:23,580 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] [2020-10-23 19:58:23,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:58:23,580 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:23,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:23,581 INFO L82 PathProgramCache]: Analyzing trace with hash -104786433, now seen corresponding path program 1 times [2020-10-23 19:58:23,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:23,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242532111] [2020-10-23 19:58:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:23,585 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,003 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:24,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:58:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:58:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 19:58:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 19:58:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:58:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:24,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242532111] [2020-10-23 19:58:24,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:24,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:58:24,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242759602] [2020-10-23 19:58:24,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:58:24,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:24,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:58:24,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:58:24,206 INFO L87 Difference]: Start difference. First operand 292 states and 316 transitions. Second operand 7 states. [2020-10-23 19:58:24,878 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:27,099 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:28,547 INFO L93 Difference]: Finished difference Result 738 states and 870 transitions. [2020-10-23 19:58:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:58:28,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-23 19:58:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:28,553 INFO L225 Difference]: With dead ends: 738 [2020-10-23 19:58:28,554 INFO L226 Difference]: Without dead ends: 561 [2020-10-23 19:58:28,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:58:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-23 19:58:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 432. [2020-10-23 19:58:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-23 19:58:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 465 transitions. [2020-10-23 19:58:28,763 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 465 transitions. Word has length 191 [2020-10-23 19:58:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:28,765 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 465 transitions. [2020-10-23 19:58:28,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:58:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 465 transitions. [2020-10-23 19:58:28,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-23 19:58:28,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:28,769 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, 1] [2020-10-23 19:58:28,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:58:28,770 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:28,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:28,771 INFO L82 PathProgramCache]: Analyzing trace with hash 573806206, now seen corresponding path program 1 times [2020-10-23 19:58:28,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:28,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215705175] [2020-10-23 19:58:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:28,775 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,175 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:58:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:58:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:58:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:58:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:58:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:58:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 19:58:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:29,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215705175] [2020-10-23 19:58:29,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:29,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:58:29,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923083127] [2020-10-23 19:58:29,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:58:29,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:29,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:58:29,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:58:29,460 INFO L87 Difference]: Start difference. First operand 432 states and 465 transitions. Second operand 13 states. [2020-10-23 19:58:30,253 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:30,637 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:58:31,014 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:31,402 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:58:31,775 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:32,899 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:33,276 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:58:33,666 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:34,070 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:58:34,444 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:36,718 INFO L93 Difference]: Finished difference Result 881 states and 1025 transitions. [2020-10-23 19:58:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:58:36,718 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 215 [2020-10-23 19:58:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:36,725 INFO L225 Difference]: With dead ends: 881 [2020-10-23 19:58:36,725 INFO L226 Difference]: Without dead ends: 564 [2020-10-23 19:58:36,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:58:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-23 19:58:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 438. [2020-10-23 19:58:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-23 19:58:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 471 transitions. [2020-10-23 19:58:36,915 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 471 transitions. Word has length 215 [2020-10-23 19:58:36,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:36,915 INFO L481 AbstractCegarLoop]: Abstraction has 438 states and 471 transitions. [2020-10-23 19:58:36,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:58:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 471 transitions. [2020-10-23 19:58:36,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-23 19:58:36,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:36,919 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, 1] [2020-10-23 19:58:36,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:58:36,920 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:36,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:36,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1567384034, now seen corresponding path program 1 times [2020-10-23 19:58:36,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:36,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639474721] [2020-10-23 19:58:36,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:36,924 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,337 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:58:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:58:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:58:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:58:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:58:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:58:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 19:58:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:37,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639474721] [2020-10-23 19:58:37,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:37,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:58:37,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78125683] [2020-10-23 19:58:37,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:58:37,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:37,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:58:37,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:58:37,557 INFO L87 Difference]: Start difference. First operand 438 states and 471 transitions. Second operand 10 states. [2020-10-23 19:58:38,244 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:40,535 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:40,950 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:41,390 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:41,801 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:42,177 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:42,579 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:42,955 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:44,762 INFO L93 Difference]: Finished difference Result 1152 states and 1374 transitions. [2020-10-23 19:58:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 19:58:44,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 215 [2020-10-23 19:58:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:44,769 INFO L225 Difference]: With dead ends: 1152 [2020-10-23 19:58:44,769 INFO L226 Difference]: Without dead ends: 829 [2020-10-23 19:58:44,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-23 19:58:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-23 19:58:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 624. [2020-10-23 19:58:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-10-23 19:58:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 681 transitions. [2020-10-23 19:58:45,067 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 681 transitions. Word has length 215 [2020-10-23 19:58:45,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:45,068 INFO L481 AbstractCegarLoop]: Abstraction has 624 states and 681 transitions. [2020-10-23 19:58:45,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:58:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 681 transitions. [2020-10-23 19:58:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-23 19:58:45,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:45,073 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, 1, 1, 1, 1, 1, 1] [2020-10-23 19:58:45,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:58:45,073 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash -363551781, now seen corresponding path program 1 times [2020-10-23 19:58:45,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:45,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615840165] [2020-10-23 19:58:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:45,077 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,505 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 19:58:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:58:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:58:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:58:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:58:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:58:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:58:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-23 19:58:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:45,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615840165] [2020-10-23 19:58:45,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:45,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 19:58:45,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724891635] [2020-10-23 19:58:45,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 19:58:45,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:45,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 19:58:45,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-23 19:58:45,739 INFO L87 Difference]: Start difference. First operand 624 states and 681 transitions. Second operand 12 states. [2020-10-23 19:58:46,440 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:48,953 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:49,375 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:49,839 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:50,259 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:50,640 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:58:51,118 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:51,508 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:52,112 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:55,343 INFO L93 Difference]: Finished difference Result 1529 states and 1871 transitions. [2020-10-23 19:58:55,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 19:58:55,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 220 [2020-10-23 19:58:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:55,352 INFO L225 Difference]: With dead ends: 1529 [2020-10-23 19:58:55,352 INFO L226 Difference]: Without dead ends: 1195 [2020-10-23 19:58:55,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-23 19:58:55,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-23 19:58:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 889. [2020-10-23 19:58:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-10-23 19:58:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 986 transitions. [2020-10-23 19:58:55,713 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 986 transitions. Word has length 220 [2020-10-23 19:58:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:55,714 INFO L481 AbstractCegarLoop]: Abstraction has 889 states and 986 transitions. [2020-10-23 19:58:55,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 19:58:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 986 transitions. [2020-10-23 19:58:55,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-23 19:58:55,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:55,718 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, 1, 1, 1, 1, 1, 1] [2020-10-23 19:58:55,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:58:55,718 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:55,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2088862584, now seen corresponding path program 1 times [2020-10-23 19:58:55,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:55,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667357394] [2020-10-23 19:58:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:55,722 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,144 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:56,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 19:58:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:58:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:58:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:58:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:58:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:58:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:58:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:58:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-23 19:58:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:56,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667357394] [2020-10-23 19:58:56,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:56,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 19:58:56,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289481628] [2020-10-23 19:58:56,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 19:58:56,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:56,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 19:58:56,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:58:56,468 INFO L87 Difference]: Start difference. First operand 889 states and 986 transitions. Second operand 15 states. [2020-10-23 19:58:57,249 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:57,640 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:58:58,041 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:58,417 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:58:58,784 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:59:00,182 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:59:00,581 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:59:00,965 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:59:01,377 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:59:01,821 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:59:02,221 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:59:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:59:04,734 INFO L93 Difference]: Finished difference Result 1791 states and 2118 transitions. [2020-10-23 19:59:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 19:59:04,735 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 220 [2020-10-23 19:59:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:59:04,744 INFO L225 Difference]: With dead ends: 1791 [2020-10-23 19:59:04,744 INFO L226 Difference]: Without dead ends: 1188 [2020-10-23 19:59:04,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2020-10-23 19:59:04,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2020-10-23 19:59:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 897. [2020-10-23 19:59:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-23 19:59:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 994 transitions. [2020-10-23 19:59:05,234 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 994 transitions. Word has length 220 [2020-10-23 19:59:05,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:59:05,235 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 994 transitions. [2020-10-23 19:59:05,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 19:59:05,235 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 994 transitions. [2020-10-23 19:59:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-23 19:59:05,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:59:05,238 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, 1, 1, 1, 1, 1, 1] [2020-10-23 19:59:05,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:59:05,238 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:59:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:59:05,239 INFO L82 PathProgramCache]: Analyzing trace with hash -52327656, now seen corresponding path program 1 times [2020-10-23 19:59:05,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:59:05,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127529775] [2020-10-23 19:59:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:59:05,242 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:59:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,630 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:59:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:59:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:59:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:59:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:59:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:59:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 19:59:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:59:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:59:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:59:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:59:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:59:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:59:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:59:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:59:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:59:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-23 19:59:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:59:05,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127529775] [2020-10-23 19:59:05,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:59:05,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:59:05,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673057780] [2020-10-23 19:59:05,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:59:05,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:59:05,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:59:05,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:59:05,875 INFO L87 Difference]: Start difference. First operand 897 states and 994 transitions. Second operand 10 states. [2020-10-23 19:59:07,464 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:59:07,875 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:59:08,261 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:59:08,659 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:59:09,033 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:59:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:59:11,307 INFO L93 Difference]: Finished difference Result 1761 states and 2083 transitions. [2020-10-23 19:59:11,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:59:11,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 220 [2020-10-23 19:59:11,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:59:11,315 INFO L225 Difference]: With dead ends: 1761 [2020-10-23 19:59:11,315 INFO L226 Difference]: Without dead ends: 1150 [2020-10-23 19:59:11,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:59:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-10-23 19:59:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 876. [2020-10-23 19:59:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-10-23 19:59:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 969 transitions. [2020-10-23 19:59:11,689 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 969 transitions. Word has length 220 [2020-10-23 19:59:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:59:11,690 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 969 transitions. [2020-10-23 19:59:11,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:59:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 969 transitions. [2020-10-23 19:59:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-23 19:59:11,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:59:11,693 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:59:11,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:59:11,693 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:59:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:59:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1069654706, now seen corresponding path program 1 times [2020-10-23 19:59:11,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:59:11,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597698311] [2020-10-23 19:59:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:59:11,697 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:59:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,125 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:59:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:59:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:59:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:59:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:59:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:59:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 19:59:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:59:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:59:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:59:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:59:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:59:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:59:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:59:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:59:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 19:59:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 19:59:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:59:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:59:12,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597698311] [2020-10-23 19:59:12,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:59:12,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 19:59:12,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289271361] [2020-10-23 19:59:12,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 19:59:12,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:59:12,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 19:59:12,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:59:12,419 INFO L87 Difference]: Start difference. First operand 876 states and 969 transitions. Second operand 16 states. [2020-10-23 19:59:13,245 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:59:13,679 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:59:14,088 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:59:14,468 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:59:14,832 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:59:16,699 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:59:18,317 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:59:18,772 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:59:19,295 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:59:19,790 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:59:20,238 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:59:21,698 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:59:22,138 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:59:22,592 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:59:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:59:23,571 INFO L93 Difference]: Finished difference Result 1873 states and 2172 transitions. [2020-10-23 19:59:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-23 19:59:23,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 221 [2020-10-23 19:59:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:59:23,582 INFO L225 Difference]: With dead ends: 1873 [2020-10-23 19:59:23,583 INFO L226 Difference]: Without dead ends: 1112 [2020-10-23 19:59:23,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2020-10-23 19:59:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2020-10-23 19:59:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 876. [2020-10-23 19:59:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-10-23 19:59:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 957 transitions. [2020-10-23 19:59:24,122 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 957 transitions. Word has length 221 [2020-10-23 19:59:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:59:24,124 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 957 transitions. [2020-10-23 19:59:24,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 19:59:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 957 transitions. [2020-10-23 19:59:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-23 19:59:24,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:59:24,129 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:59:24,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:59:24,129 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:59:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:59:24,130 INFO L82 PathProgramCache]: Analyzing trace with hash 928833090, now seen corresponding path program 1 times [2020-10-23 19:59:24,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:59:24,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840548842] [2020-10-23 19:59:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:59:24,149 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:59:24,156 INFO L168 Benchmark]: Toolchain (without parser) took 76602.36 ms. Allocated memory was 154.1 MB in the beginning and 744.5 MB in the end (delta: 590.3 MB). Free memory was 129.5 MB in the beginning and 628.9 MB in the end (delta: -499.4 MB). Peak memory consumption was 91.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:59:24,157 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 154.1 MB. Free memory was 128.6 MB in the beginning and 128.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:59:24,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.78 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 106.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:59:24,159 INFO L168 Benchmark]: Boogie Preprocessor took 102.12 ms. Allocated memory is still 154.1 MB. Free memory was 106.3 MB in the beginning and 134.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:59:24,159 INFO L168 Benchmark]: RCFGBuilder took 2133.83 ms. Allocated memory is still 154.1 MB. Free memory was 134.0 MB in the beginning and 79.4 MB in the end (delta: 54.5 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:59:24,160 INFO L168 Benchmark]: TraceAbstraction took 73646.14 ms. Allocated memory was 154.1 MB in the beginning and 744.5 MB in the end (delta: 590.3 MB). Free memory was 78.9 MB in the beginning and 628.9 MB in the end (delta: -550.0 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:59:24,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 154.1 MB. Free memory was 128.6 MB in the beginning and 128.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 706.78 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 106.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 102.12 ms. Allocated memory is still 154.1 MB. Free memory was 106.3 MB in the beginning and 134.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2133.83 ms. Allocated memory is still 154.1 MB. Free memory was 134.0 MB in the beginning and 79.4 MB in the end (delta: 54.5 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 73646.14 ms. Allocated memory was 154.1 MB in the beginning and 744.5 MB in the end (delta: 590.3 MB). Free memory was 78.9 MB in the beginning and 628.9 MB in the end (delta: -550.0 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...