/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:47:58,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:47:58,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:47:58,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:47:58,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:47:58,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:47:58,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:47:58,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:47:58,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:47:58,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:47:58,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:47:58,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:47:58,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:47:58,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:47:58,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:47:58,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:47:58,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:47:58,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:47:58,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:47:58,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:47:58,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:47:58,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:47:58,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:47:58,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:47:58,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:47:58,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:47:58,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:47:58,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:47:58,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:47:58,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:47:58,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:47:58,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:47:58,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:47:58,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:47:58,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:47:58,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:47:58,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:47:58,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:47:58,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:47:58,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:47:58,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:47:58,593 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 19:47:58,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:47:58,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:47:58,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:47:58,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:47:58,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:47:58,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:47:58,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:47:58,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:47:58,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:47:58,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:47:58,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:47:58,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:47:58,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:47:58,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:47:58,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:47:58,623 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:47:58,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:47:58,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:47:58,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:47:58,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:47:58,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:47:58,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:47:58,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:47:59,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:47:59,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:47:59,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:47:59,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:47:59,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:47:59,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-10-23 19:47:59,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5be4494/26c57da283194127a8fa76c4a14f7b2c/FLAGbab7236d9 [2020-10-23 19:48:00,065 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:48:00,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-10-23 19:48:00,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5be4494/26c57da283194127a8fa76c4a14f7b2c/FLAGbab7236d9 [2020-10-23 19:48:00,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5be4494/26c57da283194127a8fa76c4a14f7b2c [2020-10-23 19:48:00,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:48:00,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:48:00,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:48:00,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:48:00,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:48:00,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:00,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657a079f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00, skipping insertion in model container [2020-10-23 19:48:00,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:00,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:48:00,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:48:00,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:48:00,774 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:48:00,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:48:00,998 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:48:00,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00 WrapperNode [2020-10-23 19:48:00,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:48:00,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:48:01,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:48:01,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:48:01,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:01,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:01,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:01,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:01,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:01,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:01,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (1/1) ... [2020-10-23 19:48:01,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:48:01,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:48:01,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:48:01,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:48:01,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:48:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:48:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:48:01,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:48:01,226 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:48:01,226 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:48:01,226 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:48:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:48:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:48:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:48:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:48:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:48:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:48:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:48:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:48:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:48:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:48:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:48:01,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:48:01,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:48:01,229 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:48:01,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:48:01,229 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:48:01,229 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:48:01,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:48:01,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:48:01,230 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:48:01,230 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:48:01,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:48:01,230 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:48:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:48:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:48:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:48:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:48:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:48:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:48:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:48:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:48:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:48:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:48:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:48:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:48:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:48:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:48:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:48:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:48:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:48:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:48:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:48:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:48:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:48:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:48:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:48:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:48:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:48:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:48:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:48:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:48:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:48:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:48:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:48:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:48:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:48:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:48:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:48:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:48:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:48:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:48:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:48:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:48:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:48:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:48:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:48:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:48:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:48:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:48:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:48:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:48:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:48:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:48:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:48:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:48:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:48:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:48:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:48:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:48:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:48:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:48:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:48:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:48:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:48:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:48:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:48:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:48:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:48:02,617 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:48:02,617 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:48:02,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:48:02 BoogieIcfgContainer [2020-10-23 19:48:02,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:48:02,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:48:02,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:48:02,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:48:02,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:48:00" (1/3) ... [2020-10-23 19:48:02,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e7a375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:48:02, skipping insertion in model container [2020-10-23 19:48:02,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:00" (2/3) ... [2020-10-23 19:48:02,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e7a375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:48:02, skipping insertion in model container [2020-10-23 19:48:02,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:48:02" (3/3) ... [2020-10-23 19:48:02,631 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-10-23 19:48:02,644 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:48:02,650 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:48:02,664 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:48:02,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:48:02,697 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:48:02,697 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:48:02,697 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:48:02,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:48:02,697 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:48:02,697 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:48:02,698 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:48:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-10-23 19:48:02,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:48:02,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:02,743 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] [2020-10-23 19:48:02,744 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 19:48:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1253428491, now seen corresponding path program 1 times [2020-10-23 19:48:02,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:02,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369144381] [2020-10-23 19:48:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:02,835 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,608 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:48:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,937 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 19:48:03,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369144381] [2020-10-23 19:48:03,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:03,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:48:03,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069116779] [2020-10-23 19:48:03,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:48:03,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:03,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:48:03,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:48:03,966 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 3 states. [2020-10-23 19:48:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:05,789 INFO L93 Difference]: Finished difference Result 485 states and 575 transitions. [2020-10-23 19:48:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:48:05,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:48:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:05,813 INFO L225 Difference]: With dead ends: 485 [2020-10-23 19:48:05,813 INFO L226 Difference]: Without dead ends: 302 [2020-10-23 19:48:05,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:48:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-23 19:48:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 259. [2020-10-23 19:48:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-23 19:48:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 280 transitions. [2020-10-23 19:48:05,998 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 280 transitions. Word has length 148 [2020-10-23 19:48:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:06,000 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 280 transitions. [2020-10-23 19:48:06,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:48:06,000 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 280 transitions. [2020-10-23 19:48:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:48:06,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:06,005 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] [2020-10-23 19:48:06,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:48:06,006 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 19:48:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash 837790809, now seen corresponding path program 1 times [2020-10-23 19:48:06,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:06,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707332480] [2020-10-23 19:48:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:06,012 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:06,620 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:06,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:06,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:06,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:48:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:48:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:06,720 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 19:48:06,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707332480] [2020-10-23 19:48:06,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:06,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:48:06,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700555277] [2020-10-23 19:48:06,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:48:06,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:06,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:48:06,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:48:06,724 INFO L87 Difference]: Start difference. First operand 259 states and 280 transitions. Second operand 4 states. [2020-10-23 19:48:07,583 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:08,809 INFO L93 Difference]: Finished difference Result 390 states and 436 transitions. [2020-10-23 19:48:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:48:08,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:48:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:08,814 INFO L225 Difference]: With dead ends: 390 [2020-10-23 19:48:08,815 INFO L226 Difference]: Without dead ends: 285 [2020-10-23 19:48:08,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:48:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-23 19:48:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 249. [2020-10-23 19:48:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-23 19:48:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2020-10-23 19:48:08,943 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 149 [2020-10-23 19:48:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:08,944 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2020-10-23 19:48:08,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:48:08,944 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2020-10-23 19:48:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 19:48:08,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:08,948 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] [2020-10-23 19:48:08,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:48:08,948 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 19:48:08,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash -116269948, now seen corresponding path program 1 times [2020-10-23 19:48:08,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:08,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799206189] [2020-10-23 19:48:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:08,954 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:09,508 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:09,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:09,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:09,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:09,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:09,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:48:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:48:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:09,748 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 19:48:09,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799206189] [2020-10-23 19:48:09,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:09,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:09,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411434047] [2020-10-23 19:48:09,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:09,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:09,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:09,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:09,755 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 9 states. [2020-10-23 19:48:10,446 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:10,943 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:11,346 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:11,745 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:12,121 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:12,560 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:13,814 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:16,186 INFO L93 Difference]: Finished difference Result 649 states and 741 transitions. [2020-10-23 19:48:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:48:16,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-23 19:48:16,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:16,201 INFO L225 Difference]: With dead ends: 649 [2020-10-23 19:48:16,201 INFO L226 Difference]: Without dead ends: 515 [2020-10-23 19:48:16,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:48:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-23 19:48:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 434. [2020-10-23 19:48:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-23 19:48:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 480 transitions. [2020-10-23 19:48:16,435 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 480 transitions. Word has length 158 [2020-10-23 19:48:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:16,436 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 480 transitions. [2020-10-23 19:48:16,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 480 transitions. [2020-10-23 19:48:16,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 19:48:16,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:16,442 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] [2020-10-23 19:48:16,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:48:16,442 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 19:48:16,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:16,443 INFO L82 PathProgramCache]: Analyzing trace with hash 992416757, now seen corresponding path program 1 times [2020-10-23 19:48:16,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:16,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612552096] [2020-10-23 19:48:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:16,451 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:16,892 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:16,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:16,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:16,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:16,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:48:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:16,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 19:48:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 19:48:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,067 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 19:48:17,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612552096] [2020-10-23 19:48:17,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:17,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:48:17,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972112675] [2020-10-23 19:48:17,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:48:17,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:48:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:48:17,071 INFO L87 Difference]: Start difference. First operand 434 states and 480 transitions. Second operand 6 states. [2020-10-23 19:48:17,743 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:19,799 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:20,526 INFO L93 Difference]: Finished difference Result 1065 states and 1246 transitions. [2020-10-23 19:48:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:48:20,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-10-23 19:48:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:20,534 INFO L225 Difference]: With dead ends: 1065 [2020-10-23 19:48:20,535 INFO L226 Difference]: Without dead ends: 746 [2020-10-23 19:48:20,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:48:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-10-23 19:48:20,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 628. [2020-10-23 19:48:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-23 19:48:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 694 transitions. [2020-10-23 19:48:20,817 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 694 transitions. Word has length 166 [2020-10-23 19:48:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:20,818 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 694 transitions. [2020-10-23 19:48:20,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:48:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 694 transitions. [2020-10-23 19:48:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 19:48:20,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:20,821 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] [2020-10-23 19:48:20,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:48:20,821 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 19:48:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1170356631, now seen corresponding path program 1 times [2020-10-23 19:48:20,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:20,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776237077] [2020-10-23 19:48:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:20,825 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,259 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:48:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:48:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:48:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:21,452 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 19:48:21,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776237077] [2020-10-23 19:48:21,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:21,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:21,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396608405] [2020-10-23 19:48:21,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:21,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:21,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:21,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:21,458 INFO L87 Difference]: Start difference. First operand 628 states and 694 transitions. Second operand 9 states. [2020-10-23 19:48:22,174 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:23,549 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:23,963 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:24,380 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:24,786 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:25,190 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:25,575 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:25,965 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:26,517 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:28,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:28,531 INFO L93 Difference]: Finished difference Result 1698 states and 1969 transitions. [2020-10-23 19:48:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:48:28,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-10-23 19:48:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:28,540 INFO L225 Difference]: With dead ends: 1698 [2020-10-23 19:48:28,541 INFO L226 Difference]: Without dead ends: 1185 [2020-10-23 19:48:28,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:48:28,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-10-23 19:48:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1057. [2020-10-23 19:48:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-10-23 19:48:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1176 transitions. [2020-10-23 19:48:29,072 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1176 transitions. Word has length 167 [2020-10-23 19:48:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:29,073 INFO L481 AbstractCegarLoop]: Abstraction has 1057 states and 1176 transitions. [2020-10-23 19:48:29,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1176 transitions. [2020-10-23 19:48:29,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 19:48:29,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:29,076 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] [2020-10-23 19:48:29,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:48:29,077 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 19:48:29,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:29,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1297016334, now seen corresponding path program 1 times [2020-10-23 19:48:29,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:29,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727660952] [2020-10-23 19:48:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:29,081 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,497 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:29,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 19:48:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:48:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:48:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,672 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 19:48:29,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727660952] [2020-10-23 19:48:29,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:29,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:48:29,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586308197] [2020-10-23 19:48:29,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:48:29,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:29,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:48:29,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:48:29,677 INFO L87 Difference]: Start difference. First operand 1057 states and 1176 transitions. Second operand 10 states. [2020-10-23 19:48:30,355 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:31,968 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:32,384 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:32,866 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:33,267 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:33,660 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:34,761 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:35,151 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:35,641 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:36,792 INFO L93 Difference]: Finished difference Result 1318 states and 1540 transitions. [2020-10-23 19:48:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:48:36,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-10-23 19:48:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:36,802 INFO L225 Difference]: With dead ends: 1318 [2020-10-23 19:48:36,802 INFO L226 Difference]: Without dead ends: 1314 [2020-10-23 19:48:36,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:48:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-10-23 19:48:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1057. [2020-10-23 19:48:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-10-23 19:48:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1173 transitions. [2020-10-23 19:48:37,294 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1173 transitions. Word has length 172 [2020-10-23 19:48:37,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:37,295 INFO L481 AbstractCegarLoop]: Abstraction has 1057 states and 1173 transitions. [2020-10-23 19:48:37,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:48:37,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1173 transitions. [2020-10-23 19:48:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 19:48:37,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:37,300 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 19:48:37,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:48:37,301 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 19:48:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:37,302 INFO L82 PathProgramCache]: Analyzing trace with hash 978786390, now seen corresponding path program 1 times [2020-10-23 19:48:37,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:37,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250075267] [2020-10-23 19:48:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:37,306 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,675 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:48:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 19:48:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:48:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:37,874 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 19:48:37,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250075267] [2020-10-23 19:48:37,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:37,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:48:37,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48601239] [2020-10-23 19:48:37,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:48:37,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:37,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:48:37,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:48:37,877 INFO L87 Difference]: Start difference. First operand 1057 states and 1173 transitions. Second operand 10 states. [2020-10-23 19:48:39,570 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:39,961 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:40,394 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:48:40,810 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:41,260 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:41,643 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:43,437 INFO L93 Difference]: Finished difference Result 2408 states and 2863 transitions. [2020-10-23 19:48:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:48:43,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 218 [2020-10-23 19:48:43,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:43,447 INFO L225 Difference]: With dead ends: 2408 [2020-10-23 19:48:43,447 INFO L226 Difference]: Without dead ends: 1466 [2020-10-23 19:48:43,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:48:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-23 19:48:43,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1089. [2020-10-23 19:48:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-10-23 19:48:43,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1205 transitions. [2020-10-23 19:48:43,866 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1205 transitions. Word has length 218 [2020-10-23 19:48:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:43,866 INFO L481 AbstractCegarLoop]: Abstraction has 1089 states and 1205 transitions. [2020-10-23 19:48:43,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:48:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1205 transitions. [2020-10-23 19:48:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 19:48:43,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:43,872 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 19:48:43,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:48:43,873 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 19:48:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:43,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1876381514, now seen corresponding path program 1 times [2020-10-23 19:48:43,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:43,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388451149] [2020-10-23 19:48:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:43,877 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,332 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:44,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:48:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 19:48:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:48:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,677 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 19:48:44,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388451149] [2020-10-23 19:48:44,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:44,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:48:44,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145879549] [2020-10-23 19:48:44,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:48:44,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:44,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:48:44,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:48:44,681 INFO L87 Difference]: Start difference. First operand 1089 states and 1205 transitions. Second operand 13 states. [2020-10-23 19:48:45,437 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:45,816 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:46,190 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:46,584 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:46,938 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:48,004 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:48,395 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:48,821 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:49,229 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:49,626 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:51,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:51,473 INFO L93 Difference]: Finished difference Result 2476 states and 2935 transitions. [2020-10-23 19:48:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:48:51,474 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 218 [2020-10-23 19:48:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:51,483 INFO L225 Difference]: With dead ends: 2476 [2020-10-23 19:48:51,484 INFO L226 Difference]: Without dead ends: 1502 [2020-10-23 19:48:51,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:48:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-10-23 19:48:52,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1113. [2020-10-23 19:48:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2020-10-23 19:48:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1229 transitions. [2020-10-23 19:48:52,036 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1229 transitions. Word has length 218 [2020-10-23 19:48:52,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:52,036 INFO L481 AbstractCegarLoop]: Abstraction has 1113 states and 1229 transitions. [2020-10-23 19:48:52,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:48:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1229 transitions. [2020-10-23 19:48:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 19:48:52,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:52,039 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 19:48:52,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:48:52,039 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 19:48:52,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:52,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1798114035, now seen corresponding path program 1 times [2020-10-23 19:48:52,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:52,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932234149] [2020-10-23 19:48:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:52,043 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,417 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:48:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 19:48:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:48:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,628 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 19:48:52,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932234149] [2020-10-23 19:48:52,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:52,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:48:52,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884903244] [2020-10-23 19:48:52,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:48:52,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:52,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:48:52,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:48:52,631 INFO L87 Difference]: Start difference. First operand 1113 states and 1229 transitions. Second operand 7 states. [2020-10-23 19:48:53,281 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:54,024 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:57,583 INFO L93 Difference]: Finished difference Result 3634 states and 4391 transitions. [2020-10-23 19:48:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:48:57,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-23 19:48:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:57,600 INFO L225 Difference]: With dead ends: 3634 [2020-10-23 19:48:57,600 INFO L226 Difference]: Without dead ends: 2636 [2020-10-23 19:48:57,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:48:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2020-10-23 19:48:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2157. [2020-10-23 19:48:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-23 19:48:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2445 transitions. [2020-10-23 19:48:58,927 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2445 transitions. Word has length 218 [2020-10-23 19:48:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:58,928 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 2445 transitions. [2020-10-23 19:48:58,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:48:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2445 transitions. [2020-10-23 19:48:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-23 19:48:58,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:58,933 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 19:48:58,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:48:58,933 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 19:48:58,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:58,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1211780259, now seen corresponding path program 1 times [2020-10-23 19:48:58,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:58,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926056229] [2020-10-23 19:48:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:58,940 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,372 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:59,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 19:48:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:48:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:48:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:48:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 19:48:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 19:48:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:59,934 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 19:48:59,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926056229] [2020-10-23 19:48:59,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:59,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-23 19:48:59,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366447537] [2020-10-23 19:48:59,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 19:48:59,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:59,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 19:48:59,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-23 19:48:59,936 INFO L87 Difference]: Start difference. First operand 2157 states and 2445 transitions. Second operand 20 states. [2020-10-23 19:49:00,668 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:01,177 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:01,580 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:49:01,979 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:02,369 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:02,747 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:03,811 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:04,895 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:05,359 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:05,990 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:06,483 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:08,399 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:08,899 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:09,339 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:09,802 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:10,215 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:10,704 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:11,109 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:11,566 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:12,384 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 19:49:13,295 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 208 [2020-10-23 19:49:14,037 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 19:49:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:16,377 INFO L93 Difference]: Finished difference Result 4584 states and 5367 transitions. [2020-10-23 19:49:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-23 19:49:16,378 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 223 [2020-10-23 19:49:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:16,393 INFO L225 Difference]: With dead ends: 4584 [2020-10-23 19:49:16,394 INFO L226 Difference]: Without dead ends: 2542 [2020-10-23 19:49:16,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=563, Invalid=2407, Unknown=0, NotChecked=0, Total=2970 [2020-10-23 19:49:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2020-10-23 19:49:17,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2071. [2020-10-23 19:49:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2020-10-23 19:49:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2313 transitions. [2020-10-23 19:49:17,242 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2313 transitions. Word has length 223 [2020-10-23 19:49:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:17,242 INFO L481 AbstractCegarLoop]: Abstraction has 2071 states and 2313 transitions. [2020-10-23 19:49:17,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 19:49:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2313 transitions. [2020-10-23 19:49:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-23 19:49:17,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:17,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:17,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:49:17,249 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 19:49:17,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:17,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1931388439, now seen corresponding path program 1 times [2020-10-23 19:49:17,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:17,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765070896] [2020-10-23 19:49:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:17,265 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:49:17,269 INFO L168 Benchmark]: Toolchain (without parser) took 76974.30 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 126.7 MB in the beginning and 668.9 MB in the end (delta: -542.2 MB). Peak memory consumption was 249.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:17,270 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 102.5 MB in the beginning and 102.5 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:49:17,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.12 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 105.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:17,271 INFO L168 Benchmark]: Boogie Preprocessor took 122.47 ms. Allocated memory is still 151.0 MB. Free memory was 105.2 MB in the beginning and 133.3 MB in the end (delta: -28.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:17,271 INFO L168 Benchmark]: RCFGBuilder took 1495.21 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 127.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:17,272 INFO L168 Benchmark]: TraceAbstraction took 74644.78 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 127.4 MB in the beginning and 668.9 MB in the end (delta: -541.5 MB). Peak memory consumption was 248.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:17,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 102.5 MB in the beginning and 102.5 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 698.12 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 105.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 122.47 ms. Allocated memory is still 151.0 MB. Free memory was 105.2 MB in the beginning and 133.3 MB in the end (delta: -28.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1495.21 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 127.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 74644.78 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 127.4 MB in the beginning and 668.9 MB in the end (delta: -541.5 MB). Peak memory consumption was 248.6 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...