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_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:24,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:24,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:24,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:24,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:24,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:24,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:24,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:24,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:24,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:24,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:24,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:24,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:24,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:24,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:24,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:24,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:24,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:24,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:24,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:24,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:24,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:24,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:24,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:24,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:24,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:24,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:24,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:24,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:24,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:24,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:24,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:24,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:24,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:24,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:24,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:24,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:24,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:24,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:24,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:24,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:24,210 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 [2019-09-20 13:30:24,224 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:24,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:24,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:24,225 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:24,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:24,226 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:24,227 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:24,227 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:24,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:24,227 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:24,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:24,228 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:24,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:24,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:24,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:24,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:24,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:24,229 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:24,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:24,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:24,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:24,230 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:24,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:24,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:24,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:24,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:24,231 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:24,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:24,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:24,232 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:24,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:24,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:24,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:24,279 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:24,279 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:24,280 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product33.cil.c [2019-09-20 13:30:24,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd36aa78/c1e80045720542d4b18a6aa969f2e95f/FLAGaf447ae8a [2019-09-20 13:30:24,935 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:24,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product33.cil.c [2019-09-20 13:30:24,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd36aa78/c1e80045720542d4b18a6aa969f2e95f/FLAGaf447ae8a [2019-09-20 13:30:25,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd36aa78/c1e80045720542d4b18a6aa969f2e95f [2019-09-20 13:30:25,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:25,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:25,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:25,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:25,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:25,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a52633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25, skipping insertion in model container [2019-09-20 13:30:25,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,355 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:25,424 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:25,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:25,925 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:26,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:26,106 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:26,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26 WrapperNode [2019-09-20 13:30:26,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:26,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:26,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:26,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:26,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (1/1) ... [2019-09-20 13:30:26,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (1/1) ... [2019-09-20 13:30:26,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (1/1) ... [2019-09-20 13:30:26,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (1/1) ... [2019-09-20 13:30:26,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (1/1) ... [2019-09-20 13:30:26,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (1/1) ... [2019-09-20 13:30:26,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (1/1) ... [2019-09-20 13:30:26,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:26,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:26,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:26,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:26,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (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 [2019-09-20 13:30:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:26,301 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:26,301 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:26,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:26,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:26,306 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:26,306 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:26,306 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:26,309 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:26,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:26,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:27,443 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:27,443 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:27,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:27 BoogieIcfgContainer [2019-09-20 13:30:27,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:27,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:27,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:27,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:27,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:25" (1/3) ... [2019-09-20 13:30:27,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4b77b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:27, skipping insertion in model container [2019-09-20 13:30:27,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:26" (2/3) ... [2019-09-20 13:30:27,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4b77b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:27, skipping insertion in model container [2019-09-20 13:30:27,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:27" (3/3) ... [2019-09-20 13:30:27,458 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product33.cil.c [2019-09-20 13:30:27,469 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:27,480 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:27,497 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:27,523 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:27,523 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:27,524 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:27,524 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:27,524 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:27,524 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:27,524 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:27,524 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2019-09-20 13:30:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:27,562 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,562 INFO L407 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] [2019-09-20 13:30:27,565 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1697845513, now seen corresponding path program 1 times [2019-09-20 13:30:27,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,634 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:27,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:27,978 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,985 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:28,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:28,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:28,004 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 2 states. [2019-09-20 13:30:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,036 INFO L93 Difference]: Finished difference Result 122 states and 142 transitions. [2019-09-20 13:30:28,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:28,037 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-20 13:30:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,050 INFO L225 Difference]: With dead ends: 122 [2019-09-20 13:30:28,050 INFO L226 Difference]: Without dead ends: 111 [2019-09-20 13:30:28,052 INFO L636 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 [2019-09-20 13:30:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-09-20 13:30:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-09-20 13:30:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-09-20 13:30:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2019-09-20 13:30:28,102 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 52 [2019-09-20 13:30:28,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,102 INFO L475 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2019-09-20 13:30:28,103 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2019-09-20 13:30:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:30:28,106 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:28,106 INFO L407 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] [2019-09-20 13:30:28,107 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1118186443, now seen corresponding path program 1 times [2019-09-20 13:30:28,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:28,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:28,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,111 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:28,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:28,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:28,219 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:28,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:28,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:28,222 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand 3 states. [2019-09-20 13:30:28,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,236 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2019-09-20 13:30:28,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:28,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-20 13:30:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,239 INFO L225 Difference]: With dead ends: 102 [2019-09-20 13:30:28,239 INFO L226 Difference]: Without dead ends: 102 [2019-09-20 13:30:28,240 INFO L636 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 [2019-09-20 13:30:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-09-20 13:30:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-09-20 13:30:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-09-20 13:30:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2019-09-20 13:30:28,252 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 53 [2019-09-20 13:30:28,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,253 INFO L475 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2019-09-20 13:30:28,253 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2019-09-20 13:30:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:30:28,255 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:28,255 INFO L407 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] [2019-09-20 13:30:28,256 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1001368997, now seen corresponding path program 1 times [2019-09-20 13:30:28,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:28,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:28,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,259 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:28,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:28,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:28,405 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,406 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:28,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:28,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:28,407 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand 3 states. [2019-09-20 13:30:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,426 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2019-09-20 13:30:28,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:28,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-09-20 13:30:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,428 INFO L225 Difference]: With dead ends: 102 [2019-09-20 13:30:28,428 INFO L226 Difference]: Without dead ends: 102 [2019-09-20 13:30:28,429 INFO L636 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 [2019-09-20 13:30:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-09-20 13:30:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-09-20 13:30:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-09-20 13:30:28,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2019-09-20 13:30:28,439 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 57 [2019-09-20 13:30:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,439 INFO L475 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2019-09-20 13:30:28,440 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2019-09-20 13:30:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:30:28,442 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:28,442 INFO L407 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] [2019-09-20 13:30:28,442 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1834066652, now seen corresponding path program 1 times [2019-09-20 13:30:28,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:28,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:28,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,446 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:28,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:28,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:28,594 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,595 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:28,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:28,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:28,595 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand 5 states. [2019-09-20 13:30:29,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,248 INFO L93 Difference]: Finished difference Result 197 states and 230 transitions. [2019-09-20 13:30:29,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:29,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-09-20 13:30:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,254 INFO L225 Difference]: With dead ends: 197 [2019-09-20 13:30:29,254 INFO L226 Difference]: Without dead ends: 197 [2019-09-20 13:30:29,255 INFO L636 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 [2019-09-20 13:30:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-09-20 13:30:29,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 179. [2019-09-20 13:30:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2019-09-20 13:30:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 206 transitions. [2019-09-20 13:30:29,279 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 206 transitions. Word has length 65 [2019-09-20 13:30:29,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:29,282 INFO L475 AbstractCegarLoop]: Abstraction has 179 states and 206 transitions. [2019-09-20 13:30:29,282 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 206 transitions. [2019-09-20 13:30:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-20 13:30:29,286 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:29,286 INFO L407 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] [2019-09-20 13:30:29,286 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:29,287 INFO L82 PathProgramCache]: Analyzing trace with hash 476831218, now seen corresponding path program 1 times [2019-09-20 13:30:29,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:29,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:29,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,294 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:29,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:29,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:29,429 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:29,429 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:29,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:29,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:29,430 INFO L87 Difference]: Start difference. First operand 179 states and 206 transitions. Second operand 6 states. [2019-09-20 13:30:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,647 INFO L93 Difference]: Finished difference Result 284 states and 332 transitions. [2019-09-20 13:30:29,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:29,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2019-09-20 13:30:29,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,655 INFO L225 Difference]: With dead ends: 284 [2019-09-20 13:30:29,655 INFO L226 Difference]: Without dead ends: 284 [2019-09-20 13:30:29,656 INFO L636 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 [2019-09-20 13:30:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2019-09-20 13:30:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2019-09-20 13:30:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2019-09-20 13:30:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 328 transitions. [2019-09-20 13:30:29,698 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 328 transitions. Word has length 79 [2019-09-20 13:30:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:29,699 INFO L475 AbstractCegarLoop]: Abstraction has 280 states and 328 transitions. [2019-09-20 13:30:29,699 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 328 transitions. [2019-09-20 13:30:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-20 13:30:29,705 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:29,705 INFO L407 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] [2019-09-20 13:30:29,705 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:29,706 INFO L82 PathProgramCache]: Analyzing trace with hash 786989304, now seen corresponding path program 1 times [2019-09-20 13:30:29,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:29,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:29,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,709 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:29,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:29,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:29,908 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:29,909 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:29,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:29,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:29,910 INFO L87 Difference]: Start difference. First operand 280 states and 328 transitions. Second operand 6 states. [2019-09-20 13:30:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,145 INFO L93 Difference]: Finished difference Result 430 states and 514 transitions. [2019-09-20 13:30:30,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:30,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2019-09-20 13:30:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,150 INFO L225 Difference]: With dead ends: 430 [2019-09-20 13:30:30,150 INFO L226 Difference]: Without dead ends: 430 [2019-09-20 13:30:30,150 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2019-09-20 13:30:30,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 412. [2019-09-20 13:30:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-09-20 13:30:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 493 transitions. [2019-09-20 13:30:30,184 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 493 transitions. Word has length 83 [2019-09-20 13:30:30,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,185 INFO L475 AbstractCegarLoop]: Abstraction has 412 states and 493 transitions. [2019-09-20 13:30:30,185 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 493 transitions. [2019-09-20 13:30:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-20 13:30:30,189 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,189 INFO L407 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] [2019-09-20 13:30:30,189 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1116755065, now seen corresponding path program 1 times [2019-09-20 13:30:30,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,193 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:30,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:30,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:30,292 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:30,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:30,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:30,294 INFO L87 Difference]: Start difference. First operand 412 states and 493 transitions. Second operand 5 states. [2019-09-20 13:30:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,324 INFO L93 Difference]: Finished difference Result 422 states and 503 transitions. [2019-09-20 13:30:30,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:30:30,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-09-20 13:30:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,328 INFO L225 Difference]: With dead ends: 422 [2019-09-20 13:30:30,329 INFO L226 Difference]: Without dead ends: 422 [2019-09-20 13:30:30,329 INFO L636 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 [2019-09-20 13:30:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2019-09-20 13:30:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 416. [2019-09-20 13:30:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-09-20 13:30:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 496 transitions. [2019-09-20 13:30:30,364 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 496 transitions. Word has length 83 [2019-09-20 13:30:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,365 INFO L475 AbstractCegarLoop]: Abstraction has 416 states and 496 transitions. [2019-09-20 13:30:30,365 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 496 transitions. [2019-09-20 13:30:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-20 13:30:30,387 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,388 INFO L407 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] [2019-09-20 13:30:30,388 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1044368507, now seen corresponding path program 1 times [2019-09-20 13:30:30,388 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,391 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:30,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:30,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:30:30,496 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,496 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:30:30,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:30:30,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:30,497 INFO L87 Difference]: Start difference. First operand 416 states and 496 transitions. Second operand 9 states. [2019-09-20 13:30:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,555 INFO L93 Difference]: Finished difference Result 397 states and 473 transitions. [2019-09-20 13:30:30,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:30:30,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-09-20 13:30:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,559 INFO L225 Difference]: With dead ends: 397 [2019-09-20 13:30:30,559 INFO L226 Difference]: Without dead ends: 397 [2019-09-20 13:30:30,559 INFO L636 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 [2019-09-20 13:30:30,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2019-09-20 13:30:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 391. [2019-09-20 13:30:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2019-09-20 13:30:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 464 transitions. [2019-09-20 13:30:30,575 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 464 transitions. Word has length 83 [2019-09-20 13:30:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,576 INFO L475 AbstractCegarLoop]: Abstraction has 391 states and 464 transitions. [2019-09-20 13:30:30,576 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:30:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 464 transitions. [2019-09-20 13:30:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-20 13:30:30,577 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,578 INFO L407 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] [2019-09-20 13:30:30,578 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1113116411, now seen corresponding path program 1 times [2019-09-20 13:30:30,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,581 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:30,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:30,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:30:30,680 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,680 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:30:30,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:30:30,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:30,681 INFO L87 Difference]: Start difference. First operand 391 states and 464 transitions. Second operand 10 states. [2019-09-20 13:30:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,934 INFO L93 Difference]: Finished difference Result 392 states and 454 transitions. [2019-09-20 13:30:30,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:30:30,935 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2019-09-20 13:30:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,935 INFO L225 Difference]: With dead ends: 392 [2019-09-20 13:30:30,935 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:30,936 INFO L636 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 [2019-09-20 13:30:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:30,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2019-09-20 13:30:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,937 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:30,937 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:30:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:30,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:30,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:30 BoogieIcfgContainer [2019-09-20 13:30:30,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:30,946 INFO L168 Benchmark]: Toolchain (without parser) took 5607.18 ms. Allocated memory was 132.1 MB in the beginning and 267.9 MB in the end (delta: 135.8 MB). Free memory was 87.3 MB in the beginning and 145.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,947 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.92 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 87.1 MB in the beginning and 162.5 MB in the end (delta: -75.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,949 INFO L168 Benchmark]: Boogie Preprocessor took 125.60 ms. Allocated memory is still 199.2 MB. Free memory was 162.5 MB in the beginning and 158.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,950 INFO L168 Benchmark]: RCFGBuilder took 1212.23 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 158.6 MB in the beginning and 190.7 MB in the end (delta: -32.1 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,951 INFO L168 Benchmark]: TraceAbstraction took 3493.91 ms. Allocated memory was 221.2 MB in the beginning and 267.9 MB in the end (delta: 46.7 MB). Free memory was 190.7 MB in the beginning and 145.8 MB in the end (delta: 44.8 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,954 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 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 768.92 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 87.1 MB in the beginning and 162.5 MB in the end (delta: -75.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.60 ms. Allocated memory is still 199.2 MB. Free memory was 162.5 MB in the beginning and 158.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1212.23 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 158.6 MB in the beginning and 190.7 MB in the end (delta: -32.1 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3493.91 ms. Allocated memory was 221.2 MB in the beginning and 267.9 MB in the end (delta: 46.7 MB). Free memory was 190.7 MB in the beginning and 145.8 MB in the end (delta: 44.8 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 613]: 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 37 procedures, 218 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1163 SDtfs, 514 SDslu, 3330 SDs, 0 SdLazy, 514 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred 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, 52 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 639 NumberOfCodeBlocks, 639 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 630 ConstructedInterpolants, 0 QuantifiedInterpolants, 70505 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...