/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_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:52:42,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:52:42,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:52:42,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:52:42,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:52:42,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:52:42,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:52:42,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:52:42,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:52:42,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:52:42,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:52:42,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:52:42,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:52:42,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:52:42,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:52:42,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:52:42,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:52:42,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:52:42,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:52:42,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:52:42,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:52:42,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:52:42,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:52:42,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:52:42,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:52:42,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:52:42,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:52:42,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:52:42,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:52:42,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:52:42,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:52:42,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:52:42,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:52:42,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:52:42,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:52:42,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:52:42,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:52:42,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:52:42,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:52:42,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:52:42,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:52:42,810 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 19:52:42,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:52:42,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:52:42,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:52:42,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:52:42,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:52:42,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:52:42,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:52:42,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:52:42,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:52:42,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:52:42,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:52:42,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:52:42,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:52:42,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:52:42,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:52:42,828 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:52:42,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:52:42,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:52:42,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:52:42,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:52:42,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:52:42,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:52:42,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:52:43,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:52:43,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:52:43,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:52:43,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:52:43,274 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:52:43,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-10-23 19:52:43,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ceeecf2/cf53ea875aa54742bb9aaf25e74a2769/FLAG41da1517a [2020-10-23 19:52:44,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:52:44,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-10-23 19:52:44,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ceeecf2/cf53ea875aa54742bb9aaf25e74a2769/FLAG41da1517a [2020-10-23 19:52:44,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ceeecf2/cf53ea875aa54742bb9aaf25e74a2769 [2020-10-23 19:52:44,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:52:44,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:52:44,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:52:44,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:52:44,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:52:44,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:44,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18227538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44, skipping insertion in model container [2020-10-23 19:52:44,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:44,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:52:44,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:52:44,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:52:44,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:52:44,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:52:44,988 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:52:44,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44 WrapperNode [2020-10-23 19:52:44,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:52:44,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:52:44,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:52:44,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:52:45,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:45,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:45,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:45,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:45,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:45,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:45,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (1/1) ... [2020-10-23 19:52:45,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:52:45,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:52:45,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:52:45,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:52:45,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:52:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:52:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:52:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:52:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:52:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:52:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:52:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:52:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:52:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:52:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:52:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:52:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:52:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:52:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:52:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:52:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:52:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:52:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:52:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:52:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:52:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:52:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:52:45,190 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:52:45,190 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:52:45,190 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:52:45,190 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:52:45,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:52:45,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:52:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:52:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:52:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:52:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:52:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:52:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:52:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:52:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:52:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:52:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:52:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:52:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:52:45,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:52:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:52:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:52:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:52:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:52:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:52:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:52:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:52:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:52:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:52:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:52:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:52:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:52:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:52:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:52:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:52:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:52:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:52:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:52:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:52:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:52:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:52:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:52:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:52:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:52:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:52:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:52:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:52:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:52:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:52:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:52:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:52:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:52:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:52:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:52:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:52:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:52:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:52:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:52:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:52:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:52:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:52:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:52:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:52:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:52:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:52:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:52:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:52:46,595 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:52:46,595 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:52:46,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:52:46 BoogieIcfgContainer [2020-10-23 19:52:46,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:52:46,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:52:46,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:52:46,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:52:46,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:52:44" (1/3) ... [2020-10-23 19:52:46,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eda9140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:52:46, skipping insertion in model container [2020-10-23 19:52:46,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:44" (2/3) ... [2020-10-23 19:52:46,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eda9140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:52:46, skipping insertion in model container [2020-10-23 19:52:46,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:52:46" (3/3) ... [2020-10-23 19:52:46,612 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-10-23 19:52:46,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:52:46,636 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:52:46,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:52:46,684 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:52:46,684 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:52:46,684 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:52:46,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:52:46,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:52:46,685 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:52:46,685 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:52:46,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:52:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states. [2020-10-23 19:52:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:52:46,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:46,759 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] [2020-10-23 19:52:46,761 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 19:52:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:46,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1306877097, now seen corresponding path program 1 times [2020-10-23 19:52:46,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:46,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668393685] [2020-10-23 19:52:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:46,860 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,594 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:47,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:52:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:52:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:47,796 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 19:52:47,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668393685] [2020-10-23 19:52:47,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:47,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:52:47,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031859518] [2020-10-23 19:52:47,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:52:47,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:47,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:52:47,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:52:47,823 INFO L87 Difference]: Start difference. First operand 325 states. Second operand 4 states. [2020-10-23 19:52:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:49,667 INFO L93 Difference]: Finished difference Result 505 states and 601 transitions. [2020-10-23 19:52:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:52:49,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:52:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:49,688 INFO L225 Difference]: With dead ends: 505 [2020-10-23 19:52:49,688 INFO L226 Difference]: Without dead ends: 321 [2020-10-23 19:52:49,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:52:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-23 19:52:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 271. [2020-10-23 19:52:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-23 19:52:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 296 transitions. [2020-10-23 19:52:49,885 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 296 transitions. Word has length 154 [2020-10-23 19:52:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:49,887 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 296 transitions. [2020-10-23 19:52:49,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:52:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 296 transitions. [2020-10-23 19:52:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:52:49,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:49,891 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] [2020-10-23 19:52:49,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:52:49,892 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 19:52:49,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:49,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1242394103, now seen corresponding path program 1 times [2020-10-23 19:52:49,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:49,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668999640] [2020-10-23 19:52:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:49,898 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,411 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:52:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:52:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:50,521 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 19:52:50,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668999640] [2020-10-23 19:52:50,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:50,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:52:50,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684557324] [2020-10-23 19:52:50,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:52:50,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:50,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:52:50,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:52:50,525 INFO L87 Difference]: Start difference. First operand 271 states and 296 transitions. Second operand 5 states. [2020-10-23 19:52:51,413 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:52,781 INFO L93 Difference]: Finished difference Result 425 states and 484 transitions. [2020-10-23 19:52:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:52:52,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:52:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:52,787 INFO L225 Difference]: With dead ends: 425 [2020-10-23 19:52:52,787 INFO L226 Difference]: Without dead ends: 310 [2020-10-23 19:52:52,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:52:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-23 19:52:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 261. [2020-10-23 19:52:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-23 19:52:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 283 transitions. [2020-10-23 19:52:52,890 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 283 transitions. Word has length 155 [2020-10-23 19:52:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:52,891 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 283 transitions. [2020-10-23 19:52:52,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:52:52,891 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 283 transitions. [2020-10-23 19:52:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-23 19:52:52,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:52,896 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] [2020-10-23 19:52:52,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:52:52,897 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 19:52:52,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:52,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1500850877, now seen corresponding path program 1 times [2020-10-23 19:52:52,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:52,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696564591] [2020-10-23 19:52:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:52,902 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,438 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:53,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:52:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:52:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:53,655 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 19:52:53,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696564591] [2020-10-23 19:52:53,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:53,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:52:53,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605774615] [2020-10-23 19:52:53,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:52:53,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:53,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:52:53,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:52:53,658 INFO L87 Difference]: Start difference. First operand 261 states and 283 transitions. Second operand 10 states. [2020-10-23 19:52:54,454 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:54,957 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:52:55,374 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:52:55,843 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:56,251 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:56,630 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:57,931 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:00,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:00,536 INFO L93 Difference]: Finished difference Result 689 states and 803 transitions. [2020-10-23 19:53:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:53:00,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-23 19:53:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:00,544 INFO L225 Difference]: With dead ends: 689 [2020-10-23 19:53:00,544 INFO L226 Difference]: Without dead ends: 548 [2020-10-23 19:53:00,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:53:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-10-23 19:53:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 469. [2020-10-23 19:53:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-23 19:53:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 528 transitions. [2020-10-23 19:53:00,758 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 528 transitions. Word has length 164 [2020-10-23 19:53:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:00,759 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 528 transitions. [2020-10-23 19:53:00,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:53:00,759 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 528 transitions. [2020-10-23 19:53:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:53:00,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:00,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:00,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:53:00,763 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 19:53:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:00,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1355040784, now seen corresponding path program 1 times [2020-10-23 19:53:00,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:00,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118158933] [2020-10-23 19:53:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:00,770 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,211 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:01,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 19:53:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:53:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:53:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,404 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 19:53:01,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118158933] [2020-10-23 19:53:01,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:01,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:53:01,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506401390] [2020-10-23 19:53:01,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:53:01,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:01,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:53:01,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:53:01,407 INFO L87 Difference]: Start difference. First operand 469 states and 528 transitions. Second operand 10 states. [2020-10-23 19:53:02,169 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:03,670 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:04,140 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:04,759 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:05,188 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:05,911 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:06,416 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:06,834 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:07,487 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:09,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:09,037 INFO L93 Difference]: Finished difference Result 1287 states and 1565 transitions. [2020-10-23 19:53:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:53:09,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:53:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:09,047 INFO L225 Difference]: With dead ends: 1287 [2020-10-23 19:53:09,047 INFO L226 Difference]: Without dead ends: 938 [2020-10-23 19:53:09,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:53:09,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-10-23 19:53:09,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 769. [2020-10-23 19:53:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-23 19:53:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 879 transitions. [2020-10-23 19:53:09,374 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 879 transitions. Word has length 173 [2020-10-23 19:53:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:09,375 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 879 transitions. [2020-10-23 19:53:09,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:53:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 879 transitions. [2020-10-23 19:53:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:53:09,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:09,379 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] [2020-10-23 19:53:09,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:53:09,380 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 19:53:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:09,380 INFO L82 PathProgramCache]: Analyzing trace with hash 109416092, now seen corresponding path program 1 times [2020-10-23 19:53:09,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:09,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991552557] [2020-10-23 19:53:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:09,384 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,812 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 19:53:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:53:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:09,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:53:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:10,013 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 19:53:10,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991552557] [2020-10-23 19:53:10,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:10,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:53:10,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500782067] [2020-10-23 19:53:10,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:53:10,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:10,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:53:10,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:53:10,018 INFO L87 Difference]: Start difference. First operand 769 states and 879 transitions. Second operand 11 states. [2020-10-23 19:53:10,770 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:12,590 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:13,006 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:13,504 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:13,954 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:14,355 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:15,267 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:15,681 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:16,166 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:17,926 INFO L93 Difference]: Finished difference Result 1997 states and 2500 transitions. [2020-10-23 19:53:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 19:53:17,926 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2020-10-23 19:53:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:17,937 INFO L225 Difference]: With dead ends: 1997 [2020-10-23 19:53:17,938 INFO L226 Difference]: Without dead ends: 1348 [2020-10-23 19:53:17,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 19:53:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-10-23 19:53:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1059. [2020-10-23 19:53:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1059 states. [2020-10-23 19:53:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1213 transitions. [2020-10-23 19:53:18,377 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1213 transitions. Word has length 178 [2020-10-23 19:53:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:18,378 INFO L481 AbstractCegarLoop]: Abstraction has 1059 states and 1213 transitions. [2020-10-23 19:53:18,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:53:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1213 transitions. [2020-10-23 19:53:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-23 19:53:18,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:18,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:18,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:53:18,383 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 19:53:18,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1825056961, now seen corresponding path program 1 times [2020-10-23 19:53:18,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:18,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862602561] [2020-10-23 19:53:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:18,387 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,797 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:18,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:53:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:53:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:53:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:19,045 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 19:53:19,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862602561] [2020-10-23 19:53:19,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:19,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:53:19,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732196904] [2020-10-23 19:53:19,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:53:19,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:19,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:53:19,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:53:19,048 INFO L87 Difference]: Start difference. First operand 1059 states and 1213 transitions. Second operand 11 states. [2020-10-23 19:53:20,825 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:21,227 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:21,648 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:53:22,072 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:22,552 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:22,974 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:24,855 INFO L93 Difference]: Finished difference Result 2429 states and 2989 transitions. [2020-10-23 19:53:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:53:24,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 207 [2020-10-23 19:53:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:24,866 INFO L225 Difference]: With dead ends: 2429 [2020-10-23 19:53:24,866 INFO L226 Difference]: Without dead ends: 1490 [2020-10-23 19:53:24,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:53:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2020-10-23 19:53:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1097. [2020-10-23 19:53:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2020-10-23 19:53:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1253 transitions. [2020-10-23 19:53:25,324 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1253 transitions. Word has length 207 [2020-10-23 19:53:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:25,325 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1253 transitions. [2020-10-23 19:53:25,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:53:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1253 transitions. [2020-10-23 19:53:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-23 19:53:25,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:25,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:25,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:53:25,330 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 19:53:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1411425569, now seen corresponding path program 1 times [2020-10-23 19:53:25,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:25,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694537788] [2020-10-23 19:53:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:25,334 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,740 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:53:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:26,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:53:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:53:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:26,078 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 19:53:26,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694537788] [2020-10-23 19:53:26,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:26,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:53:26,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956379710] [2020-10-23 19:53:26,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:53:26,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:26,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:53:26,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:53:26,081 INFO L87 Difference]: Start difference. First operand 1097 states and 1253 transitions. Second operand 14 states. [2020-10-23 19:53:26,912 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:27,316 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:27,703 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:28,092 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:28,514 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:29,800 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:30,203 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:30,633 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:31,107 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:31,520 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:33,714 INFO L93 Difference]: Finished difference Result 2511 states and 3126 transitions. [2020-10-23 19:53:33,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:53:33,715 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 207 [2020-10-23 19:53:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:33,726 INFO L225 Difference]: With dead ends: 2511 [2020-10-23 19:53:33,726 INFO L226 Difference]: Without dead ends: 1534 [2020-10-23 19:53:33,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:53:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2020-10-23 19:53:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1121. [2020-10-23 19:53:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-23 19:53:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1277 transitions. [2020-10-23 19:53:34,201 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1277 transitions. Word has length 207 [2020-10-23 19:53:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:34,202 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1277 transitions. [2020-10-23 19:53:34,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:53:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1277 transitions. [2020-10-23 19:53:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-23 19:53:34,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:34,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:34,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:53:34,207 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 19:53:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:34,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1480943678, now seen corresponding path program 1 times [2020-10-23 19:53:34,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:34,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459337047] [2020-10-23 19:53:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:34,214 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,633 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:53:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:53:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:53:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:34,871 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 19:53:34,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459337047] [2020-10-23 19:53:34,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:34,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:53:34,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246899745] [2020-10-23 19:53:34,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:53:34,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:34,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:53:34,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:53:34,873 INFO L87 Difference]: Start difference. First operand 1121 states and 1277 transitions. Second operand 8 states. [2020-10-23 19:53:35,629 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:36,496 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:41,082 INFO L93 Difference]: Finished difference Result 3863 states and 4834 transitions. [2020-10-23 19:53:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 19:53:41,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-10-23 19:53:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:41,101 INFO L225 Difference]: With dead ends: 3863 [2020-10-23 19:53:41,102 INFO L226 Difference]: Without dead ends: 2862 [2020-10-23 19:53:41,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:53:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-10-23 19:53:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2289. [2020-10-23 19:53:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-10-23 19:53:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 2635 transitions. [2020-10-23 19:53:42,314 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 2635 transitions. Word has length 207 [2020-10-23 19:53:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:42,315 INFO L481 AbstractCegarLoop]: Abstraction has 2289 states and 2635 transitions. [2020-10-23 19:53:42,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:53:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 2635 transitions. [2020-10-23 19:53:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 19:53:42,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:42,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:42,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:53:42,322 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 19:53:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:42,323 INFO L82 PathProgramCache]: Analyzing trace with hash 454753191, now seen corresponding path program 1 times [2020-10-23 19:53:42,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:42,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151147947] [2020-10-23 19:53:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:42,326 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,728 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:53:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:53:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:53:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:53:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 19:53:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:42,983 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 19:53:42,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151147947] [2020-10-23 19:53:42,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:42,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:53:42,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480093617] [2020-10-23 19:53:42,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:53:42,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:42,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:53:42,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:53:42,985 INFO L87 Difference]: Start difference. First operand 2289 states and 2635 transitions. Second operand 8 states. [2020-10-23 19:53:43,741 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:48,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:48,714 INFO L93 Difference]: Finished difference Result 4611 states and 5800 transitions. [2020-10-23 19:53:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 19:53:48,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-10-23 19:53:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:48,745 INFO L225 Difference]: With dead ends: 4611 [2020-10-23 19:53:48,746 INFO L226 Difference]: Without dead ends: 4607 [2020-10-23 19:53:48,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2020-10-23 19:53:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2020-10-23 19:53:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 3652. [2020-10-23 19:53:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3652 states. [2020-10-23 19:53:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 4301 transitions. [2020-10-23 19:53:50,517 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 4301 transitions. Word has length 212 [2020-10-23 19:53:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:50,518 INFO L481 AbstractCegarLoop]: Abstraction has 3652 states and 4301 transitions. [2020-10-23 19:53:50,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:53:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 4301 transitions. [2020-10-23 19:53:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-23 19:53:50,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:50,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-23 19:53:50,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:53:50,533 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 19:53:50,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:50,534 INFO L82 PathProgramCache]: Analyzing trace with hash 300789092, now seen corresponding path program 1 times [2020-10-23 19:53:50,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:50,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725997088] [2020-10-23 19:53:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:50,561 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:53:50,571 INFO L168 Benchmark]: Toolchain (without parser) took 66194.58 ms. Allocated memory was 151.0 MB in the beginning and 966.8 MB in the end (delta: 815.8 MB). Free memory was 126.6 MB in the beginning and 344.7 MB in the end (delta: -218.1 MB). Peak memory consumption was 598.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:50,571 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:53:50,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.85 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 104.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:50,573 INFO L168 Benchmark]: Boogie Preprocessor took 103.83 ms. Allocated memory is still 151.0 MB. Free memory was 104.6 MB in the beginning and 100.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:50,574 INFO L168 Benchmark]: RCFGBuilder took 1505.18 ms. Allocated memory is still 151.0 MB. Free memory was 100.6 MB in the beginning and 90.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:50,574 INFO L168 Benchmark]: TraceAbstraction took 63966.70 ms. Allocated memory was 151.0 MB in the beginning and 966.8 MB in the end (delta: 815.8 MB). Free memory was 89.9 MB in the beginning and 344.7 MB in the end (delta: -254.8 MB). Peak memory consumption was 561.5 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:50,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 605.85 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 104.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 103.83 ms. Allocated memory is still 151.0 MB. Free memory was 104.6 MB in the beginning and 100.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1505.18 ms. Allocated memory is still 151.0 MB. Free memory was 100.6 MB in the beginning and 90.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 63966.70 ms. Allocated memory was 151.0 MB in the beginning and 966.8 MB in the end (delta: 815.8 MB). Free memory was 89.9 MB in the beginning and 344.7 MB in the end (delta: -254.8 MB). Peak memory consumption was 561.5 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...