/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:49:13,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:49:13,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:49:13,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:49:13,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:49:13,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:49:13,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:49:13,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:49:13,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:49:13,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:49:13,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:49:13,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:49:13,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:49:13,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:49:13,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:49:13,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:49:13,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:49:13,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:49:13,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:49:13,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:49:13,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:49:13,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:49:13,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:49:13,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:49:13,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:49:13,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:49:13,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:49:13,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:49:13,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:49:13,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:49:13,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:49:13,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:49:13,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:49:13,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:49:13,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:49:13,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:49:13,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:49:13,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:49:13,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:49:13,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:49:13,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:49:13,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:49:13,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:49:13,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:49:13,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:49:13,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:49:13,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:49:13,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:49:13,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:49:13,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:49:13,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:49:13,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:49:13,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:49:13,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:49:13,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:49:13,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:49:13,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:49:13,894 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:49:13,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:49:13,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:49:13,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:49:13,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:49:13,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:49:13,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:49:13,895 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:49:14,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:49:14,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:49:14,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:49:14,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:49:14,297 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:49:14,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-10-23 19:49:14,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1c0a611/7400e619c47a40308442ac3dff8d30b6/FLAG7ab898a53 [2020-10-23 19:49:15,124 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:49:15,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-10-23 19:49:15,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1c0a611/7400e619c47a40308442ac3dff8d30b6/FLAG7ab898a53 [2020-10-23 19:49:15,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1c0a611/7400e619c47a40308442ac3dff8d30b6 [2020-10-23 19:49:15,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:49:15,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:49:15,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:49:15,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:49:15,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:49:15,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:15,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3461e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15, skipping insertion in model container [2020-10-23 19:49:15,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:15,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:49:15,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:49:15,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:49:15,813 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:49:15,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:49:15,953 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:49:15,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15 WrapperNode [2020-10-23 19:49:15,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:49:15,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:49:15,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:49:15,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:49:15,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:15,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:15,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:15,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:16,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:16,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:16,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (1/1) ... [2020-10-23 19:49:16,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:49:16,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:49:16,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:49:16,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:49:16,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:49:16,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:49:16,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:49:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:49:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:49:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:49:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:49:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:49:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:49:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:49:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:49:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:49:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:49:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:49:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:49:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:49:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:49:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:49:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:49:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:49:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:49:16,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:49:16,197 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:49:16,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:49:16,197 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:49:16,197 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:49:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:49:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:49:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:49:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 19:49:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:49:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:49:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:49:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:49:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:49:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:49:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:49:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:49:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:49:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:49:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:49:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:49:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:49:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:49:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:49:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:49:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:49:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:49:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:49:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:49:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:49:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:49:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:49:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:49:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:49:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:49:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:49:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:49:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:49:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:49:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:49:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:49:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:49:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:49:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:49:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:49:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:49:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:49:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:49:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:49:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:49:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:49:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:49:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:49:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:49:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:49:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:49:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:49:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:49:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:49:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:49:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:49:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 19:49:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:49:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:49:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:49:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:49:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:49:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:49:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:49:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:49:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:49:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:49:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:49:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:49:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:49:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:49:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:49:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:49:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:49:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:49:17,661 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:49:17,661 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:49:17,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:49:17 BoogieIcfgContainer [2020-10-23 19:49:17,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:49:17,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:49:17,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:49:17,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:49:17,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:49:15" (1/3) ... [2020-10-23 19:49:17,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683513ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:49:17, skipping insertion in model container [2020-10-23 19:49:17,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:15" (2/3) ... [2020-10-23 19:49:17,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683513ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:49:17, skipping insertion in model container [2020-10-23 19:49:17,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:49:17" (3/3) ... [2020-10-23 19:49:17,674 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2020-10-23 19:49:17,686 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:49:17,691 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:49:17,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:49:17,728 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:49:17,728 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:49:17,728 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:49:17,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:49:17,729 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:49:17,729 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:49:17,729 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:49:17,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:49:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states. [2020-10-23 19:49:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:49:17,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:17,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:17,788 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:17,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1566652720, now seen corresponding path program 1 times [2020-10-23 19:49:17,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:17,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697308242] [2020-10-23 19:49:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:17,889 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:18,885 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:19,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:49:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:19,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697308242] [2020-10-23 19:49:19,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:19,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:49:19,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879761356] [2020-10-23 19:49:19,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:49:19,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:19,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:49:19,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:49:19,173 INFO L87 Difference]: Start difference. First operand 350 states. Second operand 3 states. [2020-10-23 19:49:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:21,357 INFO L93 Difference]: Finished difference Result 561 states and 668 transitions. [2020-10-23 19:49:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:49:21,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:49:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:21,393 INFO L225 Difference]: With dead ends: 561 [2020-10-23 19:49:21,393 INFO L226 Difference]: Without dead ends: 341 [2020-10-23 19:49:21,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:49:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-23 19:49:21,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 296. [2020-10-23 19:49:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-23 19:49:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 325 transitions. [2020-10-23 19:49:21,625 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 325 transitions. Word has length 148 [2020-10-23 19:49:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:21,626 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 325 transitions. [2020-10-23 19:49:21,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:49:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 325 transitions. [2020-10-23 19:49:21,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:49:21,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:21,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:21,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:49:21,632 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:21,633 INFO L82 PathProgramCache]: Analyzing trace with hash -694121339, now seen corresponding path program 1 times [2020-10-23 19:49:21,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:21,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187348058] [2020-10-23 19:49:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:21,638 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,214 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:22,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:49:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:49:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:22,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187348058] [2020-10-23 19:49:22,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:22,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:49:22,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244529135] [2020-10-23 19:49:22,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:49:22,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:49:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:49:22,305 INFO L87 Difference]: Start difference. First operand 296 states and 325 transitions. Second operand 4 states. [2020-10-23 19:49:23,138 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:24,716 INFO L93 Difference]: Finished difference Result 475 states and 539 transitions. [2020-10-23 19:49:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:49:24,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:49:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:24,722 INFO L225 Difference]: With dead ends: 475 [2020-10-23 19:49:24,722 INFO L226 Difference]: Without dead ends: 324 [2020-10-23 19:49:24,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:49:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-23 19:49:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 286. [2020-10-23 19:49:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-23 19:49:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 312 transitions. [2020-10-23 19:49:24,837 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 312 transitions. Word has length 149 [2020-10-23 19:49:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:24,838 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 312 transitions. [2020-10-23 19:49:24,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:49:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 312 transitions. [2020-10-23 19:49:24,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 19:49:24,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:24,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:24,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:49:24,842 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:24,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:24,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1265852620, now seen corresponding path program 1 times [2020-10-23 19:49:24,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:24,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000683831] [2020-10-23 19:49:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:24,847 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,345 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:25,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:49:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:49:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:25,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000683831] [2020-10-23 19:49:25,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:25,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:49:25,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170432037] [2020-10-23 19:49:25,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:49:25,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:25,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:49:25,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:49:25,626 INFO L87 Difference]: Start difference. First operand 286 states and 312 transitions. Second operand 9 states. [2020-10-23 19:49:26,399 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:26,910 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:27,356 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:27,770 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:28,190 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:28,589 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:30,967 INFO L93 Difference]: Finished difference Result 495 states and 564 transitions. [2020-10-23 19:49:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:49:30,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-23 19:49:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:30,974 INFO L225 Difference]: With dead ends: 495 [2020-10-23 19:49:30,975 INFO L226 Difference]: Without dead ends: 324 [2020-10-23 19:49:30,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:49:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-23 19:49:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 286. [2020-10-23 19:49:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-23 19:49:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 311 transitions. [2020-10-23 19:49:31,101 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 311 transitions. Word has length 158 [2020-10-23 19:49:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:31,102 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 311 transitions. [2020-10-23 19:49:31,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:49:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 311 transitions. [2020-10-23 19:49:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 19:49:31,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:31,122 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] [2020-10-23 19:49:31,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:49:31,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:31,124 INFO L82 PathProgramCache]: Analyzing trace with hash -381119624, now seen corresponding path program 1 times [2020-10-23 19:49:31,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:31,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347058113] [2020-10-23 19:49:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:31,129 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,558 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:31,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:49:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 19:49:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-23 19:49:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:31,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347058113] [2020-10-23 19:49:31,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:31,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:49:31,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669450121] [2020-10-23 19:49:31,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:49:31,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:31,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:49:31,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:49:31,736 INFO L87 Difference]: Start difference. First operand 286 states and 311 transitions. Second operand 6 states. [2020-10-23 19:49:32,395 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:34,218 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:35,499 INFO L93 Difference]: Finished difference Result 642 states and 736 transitions. [2020-10-23 19:49:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:49:35,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-10-23 19:49:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:35,507 INFO L225 Difference]: With dead ends: 642 [2020-10-23 19:49:35,508 INFO L226 Difference]: Without dead ends: 471 [2020-10-23 19:49:35,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:49:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-23 19:49:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 410. [2020-10-23 19:49:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-10-23 19:49:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 442 transitions. [2020-10-23 19:49:35,682 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 442 transitions. Word has length 176 [2020-10-23 19:49:35,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:35,683 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 442 transitions. [2020-10-23 19:49:35,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:49:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 442 transitions. [2020-10-23 19:49:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-23 19:49:35,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:35,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:35,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:49:35,687 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:35,687 INFO L82 PathProgramCache]: Analyzing trace with hash -328381711, now seen corresponding path program 1 times [2020-10-23 19:49:35,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:35,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542248387] [2020-10-23 19:49:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:35,691 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,097 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:49:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:49:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:49:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:36,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542248387] [2020-10-23 19:49:36,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:36,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:49:36,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601096343] [2020-10-23 19:49:36,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:49:36,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:36,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:49:36,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:49:36,278 INFO L87 Difference]: Start difference. First operand 410 states and 442 transitions. Second operand 9 states. [2020-10-23 19:49:37,011 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:38,678 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:39,099 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:39,570 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:39,962 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:40,822 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:41,201 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:41,563 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:41,976 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:43,826 INFO L93 Difference]: Finished difference Result 1053 states and 1204 transitions. [2020-10-23 19:49:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:49:43,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2020-10-23 19:49:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:43,838 INFO L225 Difference]: With dead ends: 1053 [2020-10-23 19:49:43,838 INFO L226 Difference]: Without dead ends: 758 [2020-10-23 19:49:43,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:49:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-23 19:49:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 667. [2020-10-23 19:49:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-10-23 19:49:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 726 transitions. [2020-10-23 19:49:44,163 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 726 transitions. Word has length 200 [2020-10-23 19:49:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:44,164 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 726 transitions. [2020-10-23 19:49:44,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:49:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 726 transitions. [2020-10-23 19:49:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-23 19:49:44,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:44,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:44,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:49:44,168 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:44,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1324603838, now seen corresponding path program 1 times [2020-10-23 19:49:44,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:44,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956315853] [2020-10-23 19:49:44,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:44,172 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,583 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:44,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:49:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:49:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:49:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:44,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956315853] [2020-10-23 19:49:44,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:44,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:49:44,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615049004] [2020-10-23 19:49:44,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:49:44,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:44,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:49:44,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:49:44,830 INFO L87 Difference]: Start difference. First operand 667 states and 726 transitions. Second operand 10 states. [2020-10-23 19:49:45,491 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:47,390 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:47,778 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:48,257 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:50,021 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:50,475 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:50,879 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:51,285 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:51,684 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:52,084 INFO L93 Difference]: Finished difference Result 825 states and 949 transitions. [2020-10-23 19:49:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:49:52,085 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2020-10-23 19:49:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:52,090 INFO L225 Difference]: With dead ends: 825 [2020-10-23 19:49:52,090 INFO L226 Difference]: Without dead ends: 821 [2020-10-23 19:49:52,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:49:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-10-23 19:49:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 667. [2020-10-23 19:49:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-10-23 19:49:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 725 transitions. [2020-10-23 19:49:52,331 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 725 transitions. Word has length 205 [2020-10-23 19:49:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:52,332 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 725 transitions. [2020-10-23 19:49:52,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:49:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 725 transitions. [2020-10-23 19:49:52,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-23 19:49:52,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:52,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:52,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:49:52,338 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:52,339 INFO L82 PathProgramCache]: Analyzing trace with hash 171923983, now seen corresponding path program 1 times [2020-10-23 19:49:52,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:52,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806661387] [2020-10-23 19:49:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:52,343 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,734 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:49:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:49:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:49:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:49:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:49:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 19:49:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:52,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806661387] [2020-10-23 19:49:52,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:52,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:49:52,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116311564] [2020-10-23 19:49:52,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:49:52,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:52,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:49:52,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:49:52,976 INFO L87 Difference]: Start difference. First operand 667 states and 725 transitions. Second operand 10 states. [2020-10-23 19:49:54,460 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:54,839 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:55,230 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:49:55,605 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:56,002 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:56,352 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:58,311 INFO L93 Difference]: Finished difference Result 1387 states and 1601 transitions. [2020-10-23 19:49:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:49:58,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 228 [2020-10-23 19:49:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:58,317 INFO L225 Difference]: With dead ends: 1387 [2020-10-23 19:49:58,318 INFO L226 Difference]: Without dead ends: 835 [2020-10-23 19:49:58,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:49:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-10-23 19:49:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 683. [2020-10-23 19:49:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-23 19:49:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 741 transitions. [2020-10-23 19:49:58,650 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 741 transitions. Word has length 228 [2020-10-23 19:49:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:58,650 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 741 transitions. [2020-10-23 19:49:58,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:49:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 741 transitions. [2020-10-23 19:49:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-23 19:49:58,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:58,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:58,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:49:58,654 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1926087279, now seen corresponding path program 1 times [2020-10-23 19:49:58,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:58,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422939238] [2020-10-23 19:49:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:58,659 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,039 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:59,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:49:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:49:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:49:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:49:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:49:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 19:49:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:59,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422939238] [2020-10-23 19:49:59,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:59,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:49:59,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436109124] [2020-10-23 19:49:59,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:49:59,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:59,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:49:59,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:49:59,336 INFO L87 Difference]: Start difference. First operand 683 states and 741 transitions. Second operand 13 states. [2020-10-23 19:50:00,096 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:50:00,477 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:50:00,848 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:01,260 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:01,658 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:02,668 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:03,040 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:03,432 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:03,822 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:04,182 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:06,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:50:06,257 INFO L93 Difference]: Finished difference Result 1421 states and 1637 transitions. [2020-10-23 19:50:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:50:06,258 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 228 [2020-10-23 19:50:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:50:06,263 INFO L225 Difference]: With dead ends: 1421 [2020-10-23 19:50:06,263 INFO L226 Difference]: Without dead ends: 853 [2020-10-23 19:50:06,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:50:06,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-23 19:50:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 695. [2020-10-23 19:50:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-23 19:50:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 753 transitions. [2020-10-23 19:50:06,582 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 753 transitions. Word has length 228 [2020-10-23 19:50:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:50:06,582 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 753 transitions. [2020-10-23 19:50:06,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:50:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 753 transitions. [2020-10-23 19:50:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-23 19:50:06,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:50:06,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:50:06,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:50:06,585 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:50:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:50:06,586 INFO L82 PathProgramCache]: Analyzing trace with hash 594589228, now seen corresponding path program 1 times [2020-10-23 19:50:06,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:50:06,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666295830] [2020-10-23 19:50:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:50:06,590 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:50:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,990 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:50:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:50:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:50:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:50:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:50:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:50:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:50:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:50:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:50:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:50:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:50:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:50:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 19:50:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:50:07,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666295830] [2020-10-23 19:50:07,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:50:07,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:50:07,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555678706] [2020-10-23 19:50:07,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:50:07,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:50:07,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:50:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:50:07,220 INFO L87 Difference]: Start difference. First operand 695 states and 753 transitions. Second operand 7 states. [2020-10-23 19:50:07,855 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:08,566 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:50:11,531 INFO L93 Difference]: Finished difference Result 1887 states and 2228 transitions. [2020-10-23 19:50:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:50:11,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-23 19:50:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:50:11,543 INFO L225 Difference]: With dead ends: 1887 [2020-10-23 19:50:11,543 INFO L226 Difference]: Without dead ends: 1307 [2020-10-23 19:50:11,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:50:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2020-10-23 19:50:12,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1133. [2020-10-23 19:50:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-10-23 19:50:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1269 transitions. [2020-10-23 19:50:12,045 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1269 transitions. Word has length 228 [2020-10-23 19:50:12,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:50:12,045 INFO L481 AbstractCegarLoop]: Abstraction has 1133 states and 1269 transitions. [2020-10-23 19:50:12,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:50:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1269 transitions. [2020-10-23 19:50:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-23 19:50:12,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:50:12,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:50:12,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:50:12,048 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:50:12,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:50:12,048 INFO L82 PathProgramCache]: Analyzing trace with hash 854317027, now seen corresponding path program 1 times [2020-10-23 19:50:12,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:50:12,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784217539] [2020-10-23 19:50:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:50:12,052 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:50:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,436 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:50:12,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:50:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:50:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:50:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:50:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:50:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 19:50:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:50:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:50:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:50:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:50:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:50:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 19:50:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 19:50:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:50:12,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784217539] [2020-10-23 19:50:12,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:50:12,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-23 19:50:12,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149237028] [2020-10-23 19:50:12,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 19:50:12,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:50:12,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 19:50:12,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-23 19:50:12,984 INFO L87 Difference]: Start difference. First operand 1133 states and 1269 transitions. Second operand 20 states. [2020-10-23 19:50:13,696 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:14,216 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:50:14,619 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:50:15,022 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:15,454 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:50:15,866 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:16,904 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:18,699 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:19,160 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:19,645 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:20,115 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:20,543 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:20,996 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:21,418 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:21,920 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:22,373 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:22,897 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:23,366 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:23,869 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:24,767 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 19:50:25,776 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 208 [2020-10-23 19:50:26,609 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 19:50:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:50:30,084 INFO L93 Difference]: Finished difference Result 2278 states and 2627 transitions. [2020-10-23 19:50:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-23 19:50:30,084 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 233 [2020-10-23 19:50:30,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:50:30,093 INFO L225 Difference]: With dead ends: 2278 [2020-10-23 19:50:30,093 INFO L226 Difference]: Without dead ends: 1260 [2020-10-23 19:50:30,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=530, Invalid=2332, Unknown=0, NotChecked=0, Total=2862 [2020-10-23 19:50:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-10-23 19:50:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1092. [2020-10-23 19:50:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1092 states. [2020-10-23 19:50:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1209 transitions. [2020-10-23 19:50:30,702 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1209 transitions. Word has length 233 [2020-10-23 19:50:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:50:30,702 INFO L481 AbstractCegarLoop]: Abstraction has 1092 states and 1209 transitions. [2020-10-23 19:50:30,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 19:50:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1209 transitions. [2020-10-23 19:50:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-23 19:50:30,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:50:30,708 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:50:30,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:50:30,709 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:50:30,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:50:30,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1657216815, now seen corresponding path program 1 times [2020-10-23 19:50:30,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:50:30,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480022847] [2020-10-23 19:50:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:50:30,747 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:50:30,752 INFO L168 Benchmark]: Toolchain (without parser) took 75375.24 ms. Allocated memory was 151.0 MB in the beginning and 804.3 MB in the end (delta: 653.3 MB). Free memory was 125.2 MB in the beginning and 558.8 MB in the end (delta: -433.6 MB). Peak memory consumption was 219.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:30,752 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:50:30,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.69 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:30,754 INFO L168 Benchmark]: Boogie Preprocessor took 130.15 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 98.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:30,755 INFO L168 Benchmark]: RCFGBuilder took 1578.33 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 98.5 MB in the beginning and 109.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:30,755 INFO L168 Benchmark]: TraceAbstraction took 73083.35 ms. Allocated memory was 181.4 MB in the beginning and 804.3 MB in the end (delta: 622.9 MB). Free memory was 109.4 MB in the beginning and 558.8 MB in the end (delta: -449.4 MB). Peak memory consumption was 172.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:30,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 567.69 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 130.15 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 98.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1578.33 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 98.5 MB in the beginning and 109.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 73083.35 ms. Allocated memory was 181.4 MB in the beginning and 804.3 MB in the end (delta: 622.9 MB). Free memory was 109.4 MB in the beginning and 558.8 MB in the end (delta: -449.4 MB). Peak memory consumption was 172.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...