/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_spec4_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:10:42,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:10:42,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:10:42,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:10:42,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:10:42,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:10:42,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:10:42,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:10:42,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:10:42,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:10:42,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:10:42,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:10:42,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:10:42,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:10:42,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:10:42,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:10:42,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:10:42,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:10:42,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:10:42,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:10:42,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:10:42,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:10:42,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:10:42,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:10:42,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:10:42,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:10:42,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:10:42,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:10:42,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:10:42,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:10:42,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:10:42,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:10:42,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:10:42,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:10:42,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:10:42,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:10:42,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:10:42,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:10:42,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:10:42,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:10:42,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:10:42,285 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 20:10:42,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:10:42,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:10:42,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:10:42,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:10:42,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:10:42,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:10:42,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:10:42,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:10:42,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:10:42,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:10:42,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:10:42,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:10:42,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:10:42,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:10:42,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:10:42,304 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:10:42,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:10:42,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:10:42,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:10:42,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:10:42,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:10:42,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:10:42,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:10:42,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:10:42,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:10:42,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:10:42,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:10:42,769 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:10:42,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-10-23 20:10:42,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdc7d211/519b98c2e92f43c58002a3136e2ead96/FLAG2383d6357 [2020-10-23 20:10:43,611 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:10:43,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-10-23 20:10:43,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdc7d211/519b98c2e92f43c58002a3136e2ead96/FLAG2383d6357 [2020-10-23 20:10:43,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdc7d211/519b98c2e92f43c58002a3136e2ead96 [2020-10-23 20:10:43,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:10:43,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:10:43,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:10:43,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:10:43,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:10:43,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:10:43" (1/1) ... [2020-10-23 20:10:43,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a057db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:43, skipping insertion in model container [2020-10-23 20:10:43,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:10:43" (1/1) ... [2020-10-23 20:10:43,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:10:44,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:10:44,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:10:44,456 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:10:44,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:10:44,722 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:10:44,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44 WrapperNode [2020-10-23 20:10:44,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:10:44,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:10:44,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:10:44,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:10:44,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (1/1) ... [2020-10-23 20:10:44,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (1/1) ... [2020-10-23 20:10:44,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (1/1) ... [2020-10-23 20:10:44,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (1/1) ... [2020-10-23 20:10:44,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (1/1) ... [2020-10-23 20:10:44,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (1/1) ... [2020-10-23 20:10:44,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (1/1) ... [2020-10-23 20:10:44,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:10:44,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:10:44,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:10:44,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:10:44,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (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 20:10:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:10:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:10:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:10:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:10:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:10:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:10:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:10:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:10:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:10:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:10:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:10:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:10:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:10:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:10:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:10:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:10:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:10:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:10:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:10:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:10:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:10:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:10:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:10:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:10:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:10:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:10:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:10:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:10:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:10:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:10:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:10:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:10:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:10:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:10:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:10:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:10:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:10:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:10:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:10:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:10:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:10:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:10:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:10:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:10:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:10:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:10:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:10:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:10:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:10:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:10:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:10:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:10:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:10:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:10:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:10:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:10:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:10:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:10:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:10:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:10:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:10:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:10:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:10:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:10:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:10:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:10:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:10:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:10:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:10:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:10:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:10:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:10:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:10:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:10:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:10:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:10:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:10:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:10:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:10:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:10:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:10:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:10:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:10:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:10:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:10:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:10:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:10:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:10:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:10:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:10:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:10:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:10:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:10:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:10:46,318 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:10:46,318 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:10:46,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:10:46 BoogieIcfgContainer [2020-10-23 20:10:46,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:10:46,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:10:46,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:10:46,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:10:46,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:10:43" (1/3) ... [2020-10-23 20:10:46,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd244ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:10:46, skipping insertion in model container [2020-10-23 20:10:46,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:44" (2/3) ... [2020-10-23 20:10:46,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd244ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:10:46, skipping insertion in model container [2020-10-23 20:10:46,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:10:46" (3/3) ... [2020-10-23 20:10:46,330 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-10-23 20:10:46,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:10:46,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:10:46,363 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:10:46,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:10:46,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:10:46,392 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:10:46,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:10:46,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:10:46,392 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:10:46,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:10:46,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:10:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-10-23 20:10:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:10:46,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:46,438 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 20:10:46,439 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 20:10:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:46,446 INFO L82 PathProgramCache]: Analyzing trace with hash 303673786, now seen corresponding path program 1 times [2020-10-23 20:10:46,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:46,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611521363] [2020-10-23 20:10:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:46,538 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:47,381 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:47,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:47,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:10:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:10:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:47,730 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 20:10:47,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611521363] [2020-10-23 20:10:47,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:47,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:10:47,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418235069] [2020-10-23 20:10:47,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:10:47,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:47,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:10:47,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:10:47,776 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 3 states. [2020-10-23 20:10:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:49,510 INFO L93 Difference]: Finished difference Result 484 states and 570 transitions. [2020-10-23 20:10:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:10:49,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:10:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:49,530 INFO L225 Difference]: With dead ends: 484 [2020-10-23 20:10:49,530 INFO L226 Difference]: Without dead ends: 301 [2020-10-23 20:10:49,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:10:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-23 20:10:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259. [2020-10-23 20:10:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-23 20:10:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 278 transitions. [2020-10-23 20:10:49,728 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 278 transitions. Word has length 148 [2020-10-23 20:10:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:49,729 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 278 transitions. [2020-10-23 20:10:49,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:10:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 278 transitions. [2020-10-23 20:10:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:10:49,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:49,734 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 20:10:49,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:10:49,735 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 20:10:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash 839545841, now seen corresponding path program 1 times [2020-10-23 20:10:49,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:49,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830428406] [2020-10-23 20:10:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:49,740 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:50,283 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:10:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:10:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:50,441 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 20:10:50,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830428406] [2020-10-23 20:10:50,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:50,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:10:50,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71041138] [2020-10-23 20:10:50,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:10:50,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:50,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:10:50,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:10:50,445 INFO L87 Difference]: Start difference. First operand 259 states and 278 transitions. Second operand 4 states. [2020-10-23 20:10:51,301 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:52,459 INFO L93 Difference]: Finished difference Result 394 states and 437 transitions. [2020-10-23 20:10:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:10:52,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:10:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:52,465 INFO L225 Difference]: With dead ends: 394 [2020-10-23 20:10:52,465 INFO L226 Difference]: Without dead ends: 284 [2020-10-23 20:10:52,467 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 20:10:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-23 20:10:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-10-23 20:10:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-23 20:10:52,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 265 transitions. [2020-10-23 20:10:52,579 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 265 transitions. Word has length 149 [2020-10-23 20:10:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:52,582 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 265 transitions. [2020-10-23 20:10:52,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:10:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 265 transitions. [2020-10-23 20:10:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:10:52,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:52,590 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] [2020-10-23 20:10:52,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:10:52,591 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 20:10:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1969467473, now seen corresponding path program 1 times [2020-10-23 20:10:52,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:52,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604125859] [2020-10-23 20:10:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:52,597 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,131 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:10:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:10:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:10:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:53,347 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 20:10:53,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604125859] [2020-10-23 20:10:53,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:53,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:10:53,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086695820] [2020-10-23 20:10:53,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:10:53,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:53,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:10:53,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:10:53,355 INFO L87 Difference]: Start difference. First operand 249 states and 265 transitions. Second operand 10 states. [2020-10-23 20:10:54,155 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:10:54,610 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:55,071 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:10:55,494 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:55,919 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:56,319 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:58,296 INFO L93 Difference]: Finished difference Result 440 states and 499 transitions. [2020-10-23 20:10:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:10:58,298 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:10:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:58,307 INFO L225 Difference]: With dead ends: 440 [2020-10-23 20:10:58,307 INFO L226 Difference]: Without dead ends: 306 [2020-10-23 20:10:58,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:10:58,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-23 20:10:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 249. [2020-10-23 20:10:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-23 20:10:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 264 transitions. [2020-10-23 20:10:58,486 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 264 transitions. Word has length 162 [2020-10-23 20:10:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:58,489 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 264 transitions. [2020-10-23 20:10:58,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:10:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 264 transitions. [2020-10-23 20:10:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-23 20:10:58,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:58,496 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] [2020-10-23 20:10:58,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:10:58,496 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 20:10:58,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:58,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1222633156, now seen corresponding path program 1 times [2020-10-23 20:10:58,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:58,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806608576] [2020-10-23 20:10:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:58,507 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:58,998 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:10:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:10:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 20:10:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-23 20:10:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:59,190 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 20:10:59,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806608576] [2020-10-23 20:10:59,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:59,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:10:59,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926877521] [2020-10-23 20:10:59,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:10:59,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:59,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:10:59,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:10:59,193 INFO L87 Difference]: Start difference. First operand 249 states and 264 transitions. Second operand 7 states. [2020-10-23 20:10:59,924 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:11:02,116 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:11:03,039 INFO L93 Difference]: Finished difference Result 613 states and 718 transitions. [2020-10-23 20:11:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 20:11:03,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-23 20:11:03,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:11:03,044 INFO L225 Difference]: With dead ends: 613 [2020-10-23 20:11:03,045 INFO L226 Difference]: Without dead ends: 479 [2020-10-23 20:11:03,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:11:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-23 20:11:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 350. [2020-10-23 20:11:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-23 20:11:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 375 transitions. [2020-10-23 20:11:03,228 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 375 transitions. Word has length 170 [2020-10-23 20:11:03,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:11:03,229 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 375 transitions. [2020-10-23 20:11:03,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:11:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 375 transitions. [2020-10-23 20:11:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-23 20:11:03,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:11:03,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:11:03,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:11:03,233 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 20:11:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:11:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash -587644704, now seen corresponding path program 1 times [2020-10-23 20:11:03,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:11:03,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026102466] [2020-10-23 20:11:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:11:03,237 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:11:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,648 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:11:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:11:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:11:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:11:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:11:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:11:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:11:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:11:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:11:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:11:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:11:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-23 20:11:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:03,941 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 20:11:03,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026102466] [2020-10-23 20:11:03,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:11:03,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:11:03,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430831858] [2020-10-23 20:11:03,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:11:03,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:11:03,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:11:03,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:11:03,945 INFO L87 Difference]: Start difference. First operand 350 states and 375 transitions. Second operand 15 states. [2020-10-23 20:11:04,772 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:11:05,319 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:11:05,760 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:11:06,179 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:06,608 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:11:07,024 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:08,002 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:09,510 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:09,950 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:11:10,433 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:11:10,943 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:11:11,359 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:11:11,775 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:11:12,200 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:11:12,637 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:11:13,162 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:11:13,676 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:11:15,982 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:11:16,446 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:16,942 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:11:18,506 INFO L93 Difference]: Finished difference Result 1253 states and 1564 transitions. [2020-10-23 20:11:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 20:11:18,507 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 194 [2020-10-23 20:11:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:11:18,517 INFO L225 Difference]: With dead ends: 1253 [2020-10-23 20:11:18,517 INFO L226 Difference]: Without dead ends: 1018 [2020-10-23 20:11:18,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-10-23 20:11:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-23 20:11:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 719. [2020-10-23 20:11:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-23 20:11:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 792 transitions. [2020-10-23 20:11:18,851 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 792 transitions. Word has length 194 [2020-10-23 20:11:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:11:18,852 INFO L481 AbstractCegarLoop]: Abstraction has 719 states and 792 transitions. [2020-10-23 20:11:18,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:11:18,852 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 792 transitions. [2020-10-23 20:11:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-23 20:11:18,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:11:18,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-23 20:11:18,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:11:18,860 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 20:11:18,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:11:18,860 INFO L82 PathProgramCache]: Analyzing trace with hash -835942819, now seen corresponding path program 1 times [2020-10-23 20:11:18,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:11:18,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793435221] [2020-10-23 20:11:18,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:11:19,084 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:11:19,086 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:11:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,469 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:11:19,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:11:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:11:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:11:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:11:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:11:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:11:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:11:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:11:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:11:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:11:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:11:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:11:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-23 20:11:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 20:11:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:11:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 20:11:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-23 20:11:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 20:11:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-23 20:11:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:19,850 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 20:11:19,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793435221] [2020-10-23 20:11:19,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:11:19,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:11:19,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508925619] [2020-10-23 20:11:19,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:11:19,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:11:19,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:11:19,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:11:19,853 INFO L87 Difference]: Start difference. First operand 719 states and 792 transitions. Second operand 12 states. [2020-10-23 20:11:21,477 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:21,889 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:11:22,332 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:11:22,770 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:23,203 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:11:23,592 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:11:25,442 INFO L93 Difference]: Finished difference Result 1635 states and 1974 transitions. [2020-10-23 20:11:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:11:25,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 273 [2020-10-23 20:11:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:11:25,451 INFO L225 Difference]: With dead ends: 1635 [2020-10-23 20:11:25,451 INFO L226 Difference]: Without dead ends: 1031 [2020-10-23 20:11:25,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:11:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-10-23 20:11:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 743. [2020-10-23 20:11:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-10-23 20:11:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 817 transitions. [2020-10-23 20:11:25,837 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 817 transitions. Word has length 273 [2020-10-23 20:11:25,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:11:25,838 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 817 transitions. [2020-10-23 20:11:25,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:11:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 817 transitions. [2020-10-23 20:11:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-23 20:11:25,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:11:25,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-23 20:11:25,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:11:25,846 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 20:11:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:11:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1970936853, now seen corresponding path program 1 times [2020-10-23 20:11:25,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:11:25,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421397189] [2020-10-23 20:11:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:11:26,074 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:11:26,077 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:11:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,535 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:11:26,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:11:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:11:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:11:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:11:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:11:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 20:11:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:11:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:11:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:11:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:11:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:11:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:11:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:11:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-23 20:11:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-23 20:11:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 20:11:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 20:11:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-23 20:11:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:11:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 20:11:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-23 20:11:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:26,910 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 20:11:26,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421397189] [2020-10-23 20:11:26,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:11:26,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:11:26,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273489230] [2020-10-23 20:11:26,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:11:26,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:11:26,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:11:26,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:11:26,913 INFO L87 Difference]: Start difference. First operand 743 states and 817 transitions. Second operand 15 states. [2020-10-23 20:11:27,782 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:28,197 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:11:28,614 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:29,020 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:11:29,408 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:30,550 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:30,967 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:11:31,379 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:31,785 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:11:32,192 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:11:34,391 INFO L93 Difference]: Finished difference Result 1439 states and 1706 transitions. [2020-10-23 20:11:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:11:34,391 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-10-23 20:11:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:11:34,397 INFO L225 Difference]: With dead ends: 1439 [2020-10-23 20:11:34,397 INFO L226 Difference]: Without dead ends: 811 [2020-10-23 20:11:34,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:11:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-10-23 20:11:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 595. [2020-10-23 20:11:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-23 20:11:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 650 transitions. [2020-10-23 20:11:34,725 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 650 transitions. Word has length 277 [2020-10-23 20:11:34,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:11:34,726 INFO L481 AbstractCegarLoop]: Abstraction has 595 states and 650 transitions. [2020-10-23 20:11:34,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:11:34,726 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 650 transitions. [2020-10-23 20:11:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-23 20:11:34,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:11:34,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-23 20:11:34,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:11:34,734 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 20:11:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:11:34,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1487023319, now seen corresponding path program 1 times [2020-10-23 20:11:34,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:11:34,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706044162] [2020-10-23 20:11:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:11:35,129 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2020-10-23 20:11:35,311 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 20:11:35,713 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2020-10-23 20:11:35,830 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 20:11:36,210 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2020-10-23 20:11:36,338 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:11:36,773 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2020-10-23 20:11:36,908 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:11:37,328 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2020-10-23 20:11:37,480 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:11:37,915 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2020-10-23 20:11:38,057 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 20:11:38,743 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2020-10-23 20:11:39,474 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2020-10-23 20:11:40,237 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2020-10-23 20:11:40,970 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2020-10-23 20:11:40,974 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:41,718 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 20:11:42,421 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2020-10-23 20:11:43,107 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2020-10-23 20:11:43,818 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 20:11:43,821 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:44,575 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 20:11:45,315 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 20:11:46,066 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 20:11:46,825 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 20:11:46,829 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:46,830 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:11:46,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:11:46,834 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.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:328) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:11:46,839 INFO L168 Benchmark]: Toolchain (without parser) took 62926.68 ms. Allocated memory was 154.1 MB in the beginning and 550.5 MB in the end (delta: 396.4 MB). Free memory was 110.2 MB in the beginning and 283.8 MB in the end (delta: -173.6 MB). Peak memory consumption was 223.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:46,840 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:11:46,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.13 ms. Allocated memory is still 154.1 MB. Free memory was 109.8 MB in the beginning and 130.9 MB in the end (delta: -21.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:46,842 INFO L168 Benchmark]: Boogie Preprocessor took 100.99 ms. Allocated memory is still 154.1 MB. Free memory was 130.9 MB in the beginning and 126.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:46,842 INFO L168 Benchmark]: RCFGBuilder took 1495.33 ms. Allocated memory is still 154.1 MB. Free memory was 126.7 MB in the beginning and 78.0 MB in the end (delta: 48.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:46,843 INFO L168 Benchmark]: TraceAbstraction took 60514.60 ms. Allocated memory was 154.1 MB in the beginning and 550.5 MB in the end (delta: 396.4 MB). Free memory was 78.0 MB in the beginning and 283.8 MB in the end (delta: -205.8 MB). Peak memory consumption was 190.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:46,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 798.13 ms. Allocated memory is still 154.1 MB. Free memory was 109.8 MB in the beginning and 130.9 MB in the end (delta: -21.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.99 ms. Allocated memory is still 154.1 MB. Free memory was 130.9 MB in the beginning and 126.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1495.33 ms. Allocated memory is still 154.1 MB. Free memory was 126.7 MB in the beginning and 78.0 MB in the end (delta: 48.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 60514.60 ms. Allocated memory was 154.1 MB in the beginning and 550.5 MB in the end (delta: 396.4 MB). Free memory was 78.0 MB in the beginning and 283.8 MB in the end (delta: -205.8 MB). Peak memory consumption was 190.0 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.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...