java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:49:28,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:49:28,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:49:28,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:49:28,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:49:28,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:49:28,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:49:28,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:49:28,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:49:28,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:49:28,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:49:28,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:49:28,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:49:28,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:49:28,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:49:28,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:49:28,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:49:28,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:49:28,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:49:28,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:49:28,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:49:28,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:49:28,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:49:28,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:49:28,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:49:28,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:49:28,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:49:28,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:49:28,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:49:28,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:49:28,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:49:28,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:49:28,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:49:28,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:49:28,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:49:28,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:49:28,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:49:28,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:49:28,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:49:28,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:49:28,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:49:28,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:49:28,833 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:49:28,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:49:28,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:49:28,834 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:49:28,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:49:28,835 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:49:28,836 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:49:28,836 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:49:28,836 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:49:28,836 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:49:28,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:49:28,838 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:49:28,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:49:28,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:49:28,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:49:28,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:49:28,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:49:28,839 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:49:28,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:49:28,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:49:28,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:49:28,841 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:49:28,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:49:28,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:49:28,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:49:28,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:49:28,842 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:49:28,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:49:28,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:49:28,842 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:49:28,876 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:49:28,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:49:28,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:49:28,895 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:49:28,895 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:49:28,896 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product34.cil.c [2019-09-10 02:49:28,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec9af0a5/dd7aabee1b3c439ab5534a8b3dccec38/FLAG77880d553 [2019-09-10 02:49:29,465 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:49:29,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product34.cil.c [2019-09-10 02:49:29,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec9af0a5/dd7aabee1b3c439ab5534a8b3dccec38/FLAG77880d553 [2019-09-10 02:49:29,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec9af0a5/dd7aabee1b3c439ab5534a8b3dccec38 [2019-09-10 02:49:29,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:49:29,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:49:29,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:49:29,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:49:29,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:49:29,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:49:29" (1/1) ... [2019-09-10 02:49:29,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1b76c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:29, skipping insertion in model container [2019-09-10 02:49:29,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:49:29" (1/1) ... [2019-09-10 02:49:29,837 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:49:29,896 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:49:30,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:49:30,330 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:49:30,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:49:30,467 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:49:30,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30 WrapperNode [2019-09-10 02:49:30,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:49:30,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:49:30,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:49:30,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:49:30,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (1/1) ... [2019-09-10 02:49:30,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (1/1) ... [2019-09-10 02:49:30,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (1/1) ... [2019-09-10 02:49:30,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (1/1) ... [2019-09-10 02:49:30,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (1/1) ... [2019-09-10 02:49:30,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (1/1) ... [2019-09-10 02:49:30,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (1/1) ... [2019-09-10 02:49:30,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:49:30,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:49:30,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:49:30,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:49:30,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (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 [2019-09-10 02:49:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:49:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:49:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:49:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:49:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:49:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:49:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:49:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:49:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:49:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:49:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:49:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:49:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:49:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:49:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:49:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:49:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:49:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:49:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-10 02:49:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:49:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:49:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:49:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:49:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:49:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:49:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:49:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:49:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:49:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:49:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:49:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:49:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:49:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:49:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:49:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:49:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:49:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:49:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:49:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:49:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:49:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:49:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:49:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:49:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-10 02:49:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:49:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:49:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:49:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:49:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:49:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:49:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:49:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:49:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:49:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:49:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:49:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:49:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:49:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:49:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:49:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:49:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:49:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:49:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:49:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:49:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:49:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:49:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:49:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:49:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:49:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:49:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:49:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:49:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:49:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:49:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:49:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:49:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:49:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:49:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:49:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:49:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:49:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:49:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:49:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:49:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:49:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:49:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:49:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:49:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:49:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:49:31,704 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:49:31,705 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:49:31,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:49:31 BoogieIcfgContainer [2019-09-10 02:49:31,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:49:31,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:49:31,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:49:31,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:49:31,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:49:29" (1/3) ... [2019-09-10 02:49:31,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c8c04b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:49:31, skipping insertion in model container [2019-09-10 02:49:31,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:30" (2/3) ... [2019-09-10 02:49:31,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c8c04b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:49:31, skipping insertion in model container [2019-09-10 02:49:31,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:49:31" (3/3) ... [2019-09-10 02:49:31,718 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product34.cil.c [2019-09-10 02:49:31,729 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:49:31,739 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:49:31,757 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:49:31,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:49:31,788 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:49:31,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:49:31,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:49:31,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:49:31,789 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:49:31,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:49:31,789 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:49:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2019-09-10 02:49:31,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-10 02:49:31,827 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:31,828 INFO L399 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] [2019-09-10 02:49:31,834 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1636335383, now seen corresponding path program 1 times [2019-09-10 02:49:31,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:31,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:31,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:31,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:31,889 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:32,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:32,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:49:32,241 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:32,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:49:32,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:49:32,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:49:32,266 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 2 states. [2019-09-10 02:49:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:32,312 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2019-09-10 02:49:32,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:49:32,313 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-10 02:49:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:32,325 INFO L225 Difference]: With dead ends: 126 [2019-09-10 02:49:32,326 INFO L226 Difference]: Without dead ends: 115 [2019-09-10 02:49:32,327 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:49:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-09-10 02:49:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-09-10 02:49:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-09-10 02:49:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 134 transitions. [2019-09-10 02:49:32,379 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 134 transitions. Word has length 52 [2019-09-10 02:49:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:32,379 INFO L475 AbstractCegarLoop]: Abstraction has 115 states and 134 transitions. [2019-09-10 02:49:32,379 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:49:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 134 transitions. [2019-09-10 02:49:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-10 02:49:32,383 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:32,383 INFO L399 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] [2019-09-10 02:49:32,383 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1439054439, now seen corresponding path program 1 times [2019-09-10 02:49:32,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:32,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:32,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:32,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:32,386 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:32,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:32,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:49:32,527 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:32,529 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:49:32,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:49:32,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:49:32,529 INFO L87 Difference]: Start difference. First operand 115 states and 134 transitions. Second operand 3 states. [2019-09-10 02:49:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:32,544 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2019-09-10 02:49:32,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:49:32,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-10 02:49:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:32,547 INFO L225 Difference]: With dead ends: 106 [2019-09-10 02:49:32,547 INFO L226 Difference]: Without dead ends: 106 [2019-09-10 02:49:32,548 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:49:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-09-10 02:49:32,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2019-09-10 02:49:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-09-10 02:49:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2019-09-10 02:49:32,559 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 53 [2019-09-10 02:49:32,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:32,560 INFO L475 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2019-09-10 02:49:32,560 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:49:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2019-09-10 02:49:32,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-10 02:49:32,562 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:32,563 INFO L399 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] [2019-09-10 02:49:32,563 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:32,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:32,563 INFO L82 PathProgramCache]: Analyzing trace with hash -580669987, now seen corresponding path program 1 times [2019-09-10 02:49:32,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:32,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:32,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:32,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:32,565 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:32,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:32,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:49:32,707 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:32,709 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:49:32,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:49:32,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:49:32,710 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand 7 states. [2019-09-10 02:49:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:33,015 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2019-09-10 02:49:33,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:49:33,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-09-10 02:49:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:33,018 INFO L225 Difference]: With dead ends: 106 [2019-09-10 02:49:33,019 INFO L226 Difference]: Without dead ends: 106 [2019-09-10 02:49:33,020 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:49:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-09-10 02:49:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2019-09-10 02:49:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-09-10 02:49:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2019-09-10 02:49:33,039 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 58 [2019-09-10 02:49:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:33,040 INFO L475 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2019-09-10 02:49:33,040 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:49:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2019-09-10 02:49:33,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 02:49:33,045 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:33,045 INFO L399 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] [2019-09-10 02:49:33,045 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:33,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:33,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2122897594, now seen corresponding path program 1 times [2019-09-10 02:49:33,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:33,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:33,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:33,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:33,053 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:33,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:33,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:49:33,155 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:33,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:49:33,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:49:33,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:49:33,156 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand 5 states. [2019-09-10 02:49:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:33,656 INFO L93 Difference]: Finished difference Result 206 states and 240 transitions. [2019-09-10 02:49:33,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:49:33,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-09-10 02:49:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:33,659 INFO L225 Difference]: With dead ends: 206 [2019-09-10 02:49:33,660 INFO L226 Difference]: Without dead ends: 206 [2019-09-10 02:49:33,660 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:49:33,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2019-09-10 02:49:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 187. [2019-09-10 02:49:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-09-10 02:49:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 214 transitions. [2019-09-10 02:49:33,689 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 214 transitions. Word has length 66 [2019-09-10 02:49:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:33,689 INFO L475 AbstractCegarLoop]: Abstraction has 187 states and 214 transitions. [2019-09-10 02:49:33,689 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:49:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 214 transitions. [2019-09-10 02:49:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-10 02:49:33,695 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:33,696 INFO L399 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] [2019-09-10 02:49:33,696 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:33,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1628331355, now seen corresponding path program 1 times [2019-09-10 02:49:33,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:33,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:33,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:33,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:33,700 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:33,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:33,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:49:33,851 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:33,852 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:49:33,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:49:33,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:49:33,853 INFO L87 Difference]: Start difference. First operand 187 states and 214 transitions. Second operand 6 states. [2019-09-10 02:49:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:34,057 INFO L93 Difference]: Finished difference Result 300 states and 348 transitions. [2019-09-10 02:49:34,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:49:34,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-10 02:49:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:34,071 INFO L225 Difference]: With dead ends: 300 [2019-09-10 02:49:34,072 INFO L226 Difference]: Without dead ends: 300 [2019-09-10 02:49:34,072 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:49:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-09-10 02:49:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2019-09-10 02:49:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-09-10 02:49:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 344 transitions. [2019-09-10 02:49:34,104 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 344 transitions. Word has length 80 [2019-09-10 02:49:34,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:34,105 INFO L475 AbstractCegarLoop]: Abstraction has 296 states and 344 transitions. [2019-09-10 02:49:34,105 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:49:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 344 transitions. [2019-09-10 02:49:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 02:49:34,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:34,113 INFO L399 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] [2019-09-10 02:49:34,113 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash 452882261, now seen corresponding path program 1 times [2019-09-10 02:49:34,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:34,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:34,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:34,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:34,115 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:34,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:34,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:49:34,243 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:34,244 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:49:34,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:49:34,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:49:34,245 INFO L87 Difference]: Start difference. First operand 296 states and 344 transitions. Second operand 6 states. [2019-09-10 02:49:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:34,523 INFO L93 Difference]: Finished difference Result 454 states and 538 transitions. [2019-09-10 02:49:34,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:49:34,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2019-09-10 02:49:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:34,533 INFO L225 Difference]: With dead ends: 454 [2019-09-10 02:49:34,533 INFO L226 Difference]: Without dead ends: 454 [2019-09-10 02:49:34,534 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:49:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-09-10 02:49:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 436. [2019-09-10 02:49:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2019-09-10 02:49:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 517 transitions. [2019-09-10 02:49:34,585 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 517 transitions. Word has length 84 [2019-09-10 02:49:34,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:34,586 INFO L475 AbstractCegarLoop]: Abstraction has 436 states and 517 transitions. [2019-09-10 02:49:34,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:49:34,587 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 517 transitions. [2019-09-10 02:49:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 02:49:34,594 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:34,594 INFO L399 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] [2019-09-10 02:49:34,595 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash 782648022, now seen corresponding path program 1 times [2019-09-10 02:49:34,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:34,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:34,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:34,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:34,597 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:34,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:34,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:49:34,702 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:34,703 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:49:34,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:49:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:49:34,705 INFO L87 Difference]: Start difference. First operand 436 states and 517 transitions. Second operand 5 states. [2019-09-10 02:49:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:34,732 INFO L93 Difference]: Finished difference Result 446 states and 527 transitions. [2019-09-10 02:49:34,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:49:34,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-09-10 02:49:34,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:34,736 INFO L225 Difference]: With dead ends: 446 [2019-09-10 02:49:34,736 INFO L226 Difference]: Without dead ends: 446 [2019-09-10 02:49:34,737 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:49:34,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2019-09-10 02:49:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440. [2019-09-10 02:49:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-09-10 02:49:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 520 transitions. [2019-09-10 02:49:34,761 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 520 transitions. Word has length 84 [2019-09-10 02:49:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:34,762 INFO L475 AbstractCegarLoop]: Abstraction has 440 states and 520 transitions. [2019-09-10 02:49:34,762 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:49:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 520 transitions. [2019-09-10 02:49:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 02:49:34,767 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:34,767 INFO L399 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] [2019-09-10 02:49:34,767 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:34,768 INFO L82 PathProgramCache]: Analyzing trace with hash 710261464, now seen corresponding path program 1 times [2019-09-10 02:49:34,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:34,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:34,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:34,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:34,769 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:34,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:34,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-10 02:49:34,906 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:34,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-10 02:49:34,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-10 02:49:34,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:49:34,908 INFO L87 Difference]: Start difference. First operand 440 states and 520 transitions. Second operand 9 states. [2019-09-10 02:49:34,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:34,970 INFO L93 Difference]: Finished difference Result 421 states and 497 transitions. [2019-09-10 02:49:34,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 02:49:34,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-09-10 02:49:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:34,979 INFO L225 Difference]: With dead ends: 421 [2019-09-10 02:49:34,980 INFO L226 Difference]: Without dead ends: 421 [2019-09-10 02:49:34,982 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:49:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2019-09-10 02:49:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 415. [2019-09-10 02:49:34,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2019-09-10 02:49:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 488 transitions. [2019-09-10 02:49:35,001 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 488 transitions. Word has length 84 [2019-09-10 02:49:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:35,001 INFO L475 AbstractCegarLoop]: Abstraction has 415 states and 488 transitions. [2019-09-10 02:49:35,001 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-10 02:49:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 488 transitions. [2019-09-10 02:49:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-10 02:49:35,005 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:35,005 INFO L399 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] [2019-09-10 02:49:35,006 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:35,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:35,006 INFO L82 PathProgramCache]: Analyzing trace with hash 851492262, now seen corresponding path program 1 times [2019-09-10 02:49:35,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:35,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:35,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:35,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:35,007 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:35,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:35,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-10 02:49:35,125 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:35,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 02:49:35,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 02:49:35,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:49:35,126 INFO L87 Difference]: Start difference. First operand 415 states and 488 transitions. Second operand 10 states. [2019-09-10 02:49:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:35,425 INFO L93 Difference]: Finished difference Result 416 states and 478 transitions. [2019-09-10 02:49:35,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 02:49:35,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2019-09-10 02:49:35,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:35,427 INFO L225 Difference]: With dead ends: 416 [2019-09-10 02:49:35,427 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:49:35,427 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:49:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:49:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:49:35,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:49:35,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:49:35,429 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2019-09-10 02:49:35,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:35,429 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:49:35,429 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 02:49:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:49:35,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:49:35,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:49:35 BoogieIcfgContainer [2019-09-10 02:49:35,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:49:35,440 INFO L168 Benchmark]: Toolchain (without parser) took 5617.84 ms. Allocated memory was 135.8 MB in the beginning and 309.9 MB in the end (delta: 174.1 MB). Free memory was 89.8 MB in the beginning and 276.2 MB in the end (delta: -186.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 02:49:35,442 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 109.1 MB in the beginning and 108.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-09-10 02:49:35,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.25 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 89.6 MB in the beginning and 167.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:35,445 INFO L168 Benchmark]: Boogie Preprocessor took 98.82 ms. Allocated memory is still 201.9 MB. Free memory was 167.1 MB in the beginning and 162.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:35,445 INFO L168 Benchmark]: RCFGBuilder took 1140.29 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 162.1 MB in the beginning and 197.1 MB in the end (delta: -35.0 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:35,452 INFO L168 Benchmark]: TraceAbstraction took 3727.46 ms. Allocated memory was 231.7 MB in the beginning and 309.9 MB in the end (delta: 78.1 MB). Free memory was 197.1 MB in the beginning and 276.2 MB in the end (delta: -79.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 02:49:35,457 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 109.1 MB in the beginning and 108.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.25 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 89.6 MB in the beginning and 167.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.82 ms. Allocated memory is still 201.9 MB. Free memory was 167.1 MB in the beginning and 162.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1140.29 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 162.1 MB in the beginning and 197.1 MB in the end (delta: -35.0 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3727.46 ms. Allocated memory was 231.7 MB in the beginning and 309.9 MB in the end (delta: 78.1 MB). Free memory was 197.1 MB in the beginning and 276.2 MB in the end (delta: -79.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 786]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1201 SDtfs, 549 SDslu, 3722 SDs, 0 SdLazy, 632 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=440occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 646 NumberOfCodeBlocks, 646 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 637 ConstructedInterpolants, 0 QuantifiedInterpolants, 73440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...