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_spec5_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:47,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:47,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:47,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:47,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:47,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:47,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:47,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:47,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:47,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:47,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:47,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:47,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:47,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:47,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:47,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:47,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:47,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:47,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:47,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:47,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:47,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:47,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:47,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:47,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:47,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:47,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:47,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:47,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:47,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:47,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:47,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:47,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:47,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:47,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:47,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:47,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:47,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:47,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:47,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:47,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:47,393 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 [2019-09-16 17:09:47,413 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:47,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:47,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:47,414 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:47,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:47,415 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:47,415 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:47,416 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:47,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:47,417 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:47,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:47,419 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:47,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:47,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:47,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:47,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:47,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:47,420 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:47,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:47,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:47,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:47,422 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:47,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:47,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:47,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:47,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:47,423 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:47,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:47,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:47,424 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:47,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:47,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:47,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:47,496 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:47,497 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:47,498 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-09-16 17:09:47,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc98d1d6/11a5f57cddd94b45bbea052109861006/FLAG9f10bce05 [2019-09-16 17:09:48,043 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:48,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-09-16 17:09:48,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc98d1d6/11a5f57cddd94b45bbea052109861006/FLAG9f10bce05 [2019-09-16 17:09:48,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc98d1d6/11a5f57cddd94b45bbea052109861006 [2019-09-16 17:09:48,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:48,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:48,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:48,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:48,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:48,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:48" (1/1) ... [2019-09-16 17:09:48,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d41f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:48, skipping insertion in model container [2019-09-16 17:09:48,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:48" (1/1) ... [2019-09-16 17:09:48,412 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:48,468 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:48,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:48,991 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:49,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:49,127 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:49,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49 WrapperNode [2019-09-16 17:09:49,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:49,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:49,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:49,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:49,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (1/1) ... [2019-09-16 17:09:49,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (1/1) ... [2019-09-16 17:09:49,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (1/1) ... [2019-09-16 17:09:49,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (1/1) ... [2019-09-16 17:09:49,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (1/1) ... [2019-09-16 17:09:49,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (1/1) ... [2019-09-16 17:09:49,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (1/1) ... [2019-09-16 17:09:49,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:49,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:49,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:49,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:49,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (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 [2019-09-16 17:09:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:09:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-16 17:09:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:09:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:49,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:49,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:09:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:09:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-16 17:09:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:49,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:49,292 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:49,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:49,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:49,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:49,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:49,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:49,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:49,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:49,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:49,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:49,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:49,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:49,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:49,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:49,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:49,297 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:49,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:49,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:49,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:50,381 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:50,382 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:50,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:50 BoogieIcfgContainer [2019-09-16 17:09:50,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:50,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:50,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:50,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:50,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:48" (1/3) ... [2019-09-16 17:09:50,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163af1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:50, skipping insertion in model container [2019-09-16 17:09:50,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:49" (2/3) ... [2019-09-16 17:09:50,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163af1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:50, skipping insertion in model container [2019-09-16 17:09:50,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:50" (3/3) ... [2019-09-16 17:09:50,392 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2019-09-16 17:09:50,402 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:50,431 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:50,448 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:50,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:50,476 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:50,476 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:50,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:50,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:50,477 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:50,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:50,477 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2019-09-16 17:09:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:50,514 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:50,515 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:50,518 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:50,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:50,524 INFO L82 PathProgramCache]: Analyzing trace with hash -981984858, now seen corresponding path program 1 times [2019-09-16 17:09:50,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:50,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:50,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:50,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:50,572 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:50,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:50,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:50,938 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:50,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:50,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:50,967 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2019-09-16 17:09:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:51,009 INFO L93 Difference]: Finished difference Result 160 states and 188 transitions. [2019-09-16 17:09:51,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:51,010 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:51,026 INFO L225 Difference]: With dead ends: 160 [2019-09-16 17:09:51,026 INFO L226 Difference]: Without dead ends: 149 [2019-09-16 17:09:51,030 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 [2019-09-16 17:09:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-16 17:09:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-09-16 17:09:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-09-16 17:09:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2019-09-16 17:09:51,097 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 59 [2019-09-16 17:09:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:51,097 INFO L475 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2019-09-16 17:09:51,097 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:51,098 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2019-09-16 17:09:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:51,102 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:51,102 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:51,102 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:51,103 INFO L82 PathProgramCache]: Analyzing trace with hash 598368098, now seen corresponding path program 1 times [2019-09-16 17:09:51,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:51,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:51,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:51,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:51,106 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:51,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:51,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:51,276 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:51,279 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:51,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:51,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:51,280 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 3 states. [2019-09-16 17:09:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:51,316 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2019-09-16 17:09:51,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:51,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:51,321 INFO L225 Difference]: With dead ends: 140 [2019-09-16 17:09:51,322 INFO L226 Difference]: Without dead ends: 140 [2019-09-16 17:09:51,324 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 [2019-09-16 17:09:51,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-16 17:09:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-16 17:09:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-16 17:09:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-09-16 17:09:51,355 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 60 [2019-09-16 17:09:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:51,356 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-09-16 17:09:51,357 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-09-16 17:09:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-16 17:09:51,363 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:51,363 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:51,364 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:51,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:51,364 INFO L82 PathProgramCache]: Analyzing trace with hash 75711308, now seen corresponding path program 1 times [2019-09-16 17:09:51,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:51,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:51,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:51,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:51,368 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:51,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:51,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:51,529 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:51,529 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:51,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:51,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:51,530 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 7 states. [2019-09-16 17:09:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:52,078 INFO L93 Difference]: Finished difference Result 308 states and 370 transitions. [2019-09-16 17:09:52,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:52,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-16 17:09:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:52,085 INFO L225 Difference]: With dead ends: 308 [2019-09-16 17:09:52,085 INFO L226 Difference]: Without dead ends: 308 [2019-09-16 17:09:52,086 INFO L636 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 [2019-09-16 17:09:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2019-09-16 17:09:52,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 300. [2019-09-16 17:09:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-09-16 17:09:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 364 transitions. [2019-09-16 17:09:52,150 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 364 transitions. Word has length 64 [2019-09-16 17:09:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:52,151 INFO L475 AbstractCegarLoop]: Abstraction has 300 states and 364 transitions. [2019-09-16 17:09:52,151 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 364 transitions. [2019-09-16 17:09:52,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:09:52,159 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:52,159 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:52,159 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:52,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:52,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1055869647, now seen corresponding path program 1 times [2019-09-16 17:09:52,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:52,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:52,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,168 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:09:52,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:52,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:52,331 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:52,333 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:52,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:52,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:52,335 INFO L87 Difference]: Start difference. First operand 300 states and 364 transitions. Second operand 7 states. [2019-09-16 17:09:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:53,219 INFO L93 Difference]: Finished difference Result 499 states and 620 transitions. [2019-09-16 17:09:53,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:09:53,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-16 17:09:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:53,228 INFO L225 Difference]: With dead ends: 499 [2019-09-16 17:09:53,230 INFO L226 Difference]: Without dead ends: 499 [2019-09-16 17:09:53,231 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:09:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-09-16 17:09:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 446. [2019-09-16 17:09:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-09-16 17:09:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 533 transitions. [2019-09-16 17:09:53,304 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 533 transitions. Word has length 70 [2019-09-16 17:09:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:53,308 INFO L475 AbstractCegarLoop]: Abstraction has 446 states and 533 transitions. [2019-09-16 17:09:53,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 533 transitions. [2019-09-16 17:09:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-16 17:09:53,314 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:53,314 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:53,314 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:53,314 INFO L82 PathProgramCache]: Analyzing trace with hash -2082867985, now seen corresponding path program 1 times [2019-09-16 17:09:53,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:53,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:53,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:53,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:53,318 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:53,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:53,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:53,459 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:53,460 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:53,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:53,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:53,461 INFO L87 Difference]: Start difference. First operand 446 states and 533 transitions. Second operand 4 states. [2019-09-16 17:09:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:53,864 INFO L93 Difference]: Finished difference Result 1200 states and 1503 transitions. [2019-09-16 17:09:53,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:09:53,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-09-16 17:09:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:53,875 INFO L225 Difference]: With dead ends: 1200 [2019-09-16 17:09:53,876 INFO L226 Difference]: Without dead ends: 1200 [2019-09-16 17:09:53,876 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2019-09-16 17:09:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1174. [2019-09-16 17:09:53,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2019-09-16 17:09:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1455 transitions. [2019-09-16 17:09:53,964 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1455 transitions. Word has length 107 [2019-09-16 17:09:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:53,968 INFO L475 AbstractCegarLoop]: Abstraction has 1174 states and 1455 transitions. [2019-09-16 17:09:53,968 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:09:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1455 transitions. [2019-09-16 17:09:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-16 17:09:53,982 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:53,982 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:53,983 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1842327856, now seen corresponding path program 1 times [2019-09-16 17:09:53,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:53,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:53,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:53,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:53,987 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:54,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:54,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:54,158 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:54,159 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:54,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:54,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:54,160 INFO L87 Difference]: Start difference. First operand 1174 states and 1455 transitions. Second operand 6 states. [2019-09-16 17:09:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:54,206 INFO L93 Difference]: Finished difference Result 1216 states and 1507 transitions. [2019-09-16 17:09:54,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:54,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-16 17:09:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:54,217 INFO L225 Difference]: With dead ends: 1216 [2019-09-16 17:09:54,217 INFO L226 Difference]: Without dead ends: 1216 [2019-09-16 17:09:54,217 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2019-09-16 17:09:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1204. [2019-09-16 17:09:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-09-16 17:09:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1487 transitions. [2019-09-16 17:09:54,274 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1487 transitions. Word has length 107 [2019-09-16 17:09:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:54,276 INFO L475 AbstractCegarLoop]: Abstraction has 1204 states and 1487 transitions. [2019-09-16 17:09:54,276 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1487 transitions. [2019-09-16 17:09:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-16 17:09:54,281 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:54,281 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:54,281 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:54,282 INFO L82 PathProgramCache]: Analyzing trace with hash 85944846, now seen corresponding path program 1 times [2019-09-16 17:09:54,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:54,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:54,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,287 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:54,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:54,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:54,420 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:54,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:54,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:54,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:54,422 INFO L87 Difference]: Start difference. First operand 1204 states and 1487 transitions. Second operand 8 states. [2019-09-16 17:09:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:54,456 INFO L93 Difference]: Finished difference Result 997 states and 1218 transitions. [2019-09-16 17:09:54,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:54,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-09-16 17:09:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:54,464 INFO L225 Difference]: With dead ends: 997 [2019-09-16 17:09:54,465 INFO L226 Difference]: Without dead ends: 997 [2019-09-16 17:09:54,465 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2019-09-16 17:09:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2019-09-16 17:09:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2019-09-16 17:09:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1218 transitions. [2019-09-16 17:09:54,511 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1218 transitions. Word has length 107 [2019-09-16 17:09:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:54,511 INFO L475 AbstractCegarLoop]: Abstraction has 997 states and 1218 transitions. [2019-09-16 17:09:54,511 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1218 transitions. [2019-09-16 17:09:54,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-16 17:09:54,516 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:54,516 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:54,516 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:54,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:54,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1945052595, now seen corresponding path program 1 times [2019-09-16 17:09:54,517 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:54,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:54,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,519 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:54,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:54,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:09:54,715 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:54,716 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:09:54,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:09:54,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:54,717 INFO L87 Difference]: Start difference. First operand 997 states and 1218 transitions. Second operand 9 states. [2019-09-16 17:09:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:55,947 INFO L93 Difference]: Finished difference Result 1941 states and 2377 transitions. [2019-09-16 17:09:55,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:09:55,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-16 17:09:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:55,960 INFO L225 Difference]: With dead ends: 1941 [2019-09-16 17:09:55,960 INFO L226 Difference]: Without dead ends: 1941 [2019-09-16 17:09:55,961 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:09:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2019-09-16 17:09:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1716. [2019-09-16 17:09:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1716 states. [2019-09-16 17:09:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2065 transitions. [2019-09-16 17:09:56,055 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2065 transitions. Word has length 111 [2019-09-16 17:09:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:56,056 INFO L475 AbstractCegarLoop]: Abstraction has 1716 states and 2065 transitions. [2019-09-16 17:09:56,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:09:56,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2065 transitions. [2019-09-16 17:09:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-16 17:09:56,061 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:56,062 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:56,062 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,063 INFO L82 PathProgramCache]: Analyzing trace with hash -451795391, now seen corresponding path program 1 times [2019-09-16 17:09:56,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:56,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:56,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,066 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-16 17:09:56,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:09:56,259 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:09:56,260 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2019-09-16 17:09:56,263 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [125], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [170], [195], [197], [202], [205], [206], [208], [213], [215], [216], [217], [218], [219], [220], [224], [227], [231], [237], [266], [270], [273], [277], [278], [281], [282], [283], [285], [286], [287], [289], [292], [294], [297], [300], [309], [311], [312], [315], [317], [320], [327], [330], [331], [332], [356], [358], [359], [377], [378], [428], [429], [439], [447], [448], [449], [450], [451], [452], [453], [454], [455], [489], [490], [493], [494], [495], [496], [497], [498], [503], [504], [507], [508], [509], [510], [511], [512], [513], [514], [515], [516], [517], [518], [519], [520], [525], [526], [527], [528], [529], [530], [531], [533], [534], [535], [536], [539], [540], [543], [544], [545], [547], [548], [553], [554], [555] [2019-09-16 17:09:56,324 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:09:56,324 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:09:56,429 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:09:56,433 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:09:56,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,438 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:09:56,498 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:09:56,498 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:09:56,503 INFO L420 sIntCurrentIteration]: We unified 169 AI predicates to 169 [2019-09-16 17:09:56,504 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:09:56,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:09:56,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:09:56,505 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:56,506 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:56,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:56,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:56,507 INFO L87 Difference]: Start difference. First operand 1716 states and 2065 transitions. Second operand 2 states. [2019-09-16 17:09:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:56,507 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:09:56,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:56,508 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-09-16 17:09:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:56,508 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:09:56,508 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:09:56,508 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:09:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:09:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:09:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:09:56,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2019-09-16 17:09:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:56,510 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:09:56,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:56,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:09:56,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:09:56,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:09:56 BoogieIcfgContainer [2019-09-16 17:09:56,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:09:56,519 INFO L168 Benchmark]: Toolchain (without parser) took 8128.72 ms. Allocated memory was 135.8 MB in the beginning and 367.0 MB in the end (delta: 231.2 MB). Free memory was 81.9 MB in the beginning and 75.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 237.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:56,520 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 135.8 MB. Free memory was 101.6 MB in the beginning and 101.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:09:56,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.97 ms. Allocated memory was 135.8 MB in the beginning and 196.6 MB in the end (delta: 60.8 MB). Free memory was 81.7 MB in the beginning and 159.8 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:56,522 INFO L168 Benchmark]: Boogie Preprocessor took 84.78 ms. Allocated memory is still 196.6 MB. Free memory was 159.8 MB in the beginning and 155.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:56,523 INFO L168 Benchmark]: RCFGBuilder took 1169.41 ms. Allocated memory is still 196.6 MB. Free memory was 155.1 MB in the beginning and 68.7 MB in the end (delta: 86.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:56,524 INFO L168 Benchmark]: TraceAbstraction took 6131.66 ms. Allocated memory was 196.6 MB in the beginning and 367.0 MB in the end (delta: 170.4 MB). Free memory was 68.0 MB in the beginning and 75.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 162.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:56,528 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 135.8 MB. Free memory was 101.6 MB in the beginning and 101.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.97 ms. Allocated memory was 135.8 MB in the beginning and 196.6 MB in the end (delta: 60.8 MB). Free memory was 81.7 MB in the beginning and 159.8 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.78 ms. Allocated memory is still 196.6 MB. Free memory was 159.8 MB in the beginning and 155.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1169.41 ms. Allocated memory is still 196.6 MB. Free memory was 155.1 MB in the beginning and 68.7 MB in the end (delta: 86.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6131.66 ms. Allocated memory was 196.6 MB in the beginning and 367.0 MB in the end (delta: 170.4 MB). Free memory was 68.0 MB in the beginning and 75.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 162.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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 42 procedures, 248 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1580 SDtfs, 1173 SDslu, 3517 SDs, 0 SdLazy, 1750 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1716occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8106508875739645 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 324 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 855 NumberOfCodeBlocks, 855 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 846 ConstructedInterpolants, 0 QuantifiedInterpolants, 142708 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 67/74 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...