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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:56,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:56,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:56,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:56,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:56,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:56,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:56,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:56,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:56,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:56,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:56,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:56,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:56,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:56,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:56,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:56,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:56,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:56,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:56,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:56,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:56,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:56,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:56,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:56,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:56,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:56,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:56,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:56,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:56,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:56,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:56,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:56,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:56,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:56,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:56,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:56,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:56,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:56,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:56,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:56,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:56,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:36:56,405 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:56,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:56,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:56,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:56,407 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:56,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:56,407 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:56,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:56,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:56,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:56,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:56,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:56,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:56,408 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:56,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:56,409 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:56,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:56,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:56,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:56,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:56,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:56,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:56,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:56,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:56,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:56,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:56,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:56,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:56,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:56,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:56,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:56,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:56,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:56,705 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:56,705 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2019-10-14 23:36:56,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f61148f8/2e1f557c295b49f6961dcb58c5a4a353/FLAGc10daf7d9 [2019-10-14 23:36:57,298 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:57,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2019-10-14 23:36:57,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f61148f8/2e1f557c295b49f6961dcb58c5a4a353/FLAGc10daf7d9 [2019-10-14 23:36:57,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f61148f8/2e1f557c295b49f6961dcb58c5a4a353 [2019-10-14 23:36:57,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:57,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:57,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:57,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:57,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:57,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589f5987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57, skipping insertion in model container [2019-10-14 23:36:57,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,662 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:57,730 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:58,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:58,125 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:58,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:58,276 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:58,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58 WrapperNode [2019-10-14 23:36:58,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:58,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:58,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:58,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:58,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (1/1) ... [2019-10-14 23:36:58,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (1/1) ... [2019-10-14 23:36:58,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (1/1) ... [2019-10-14 23:36:58,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (1/1) ... [2019-10-14 23:36:58,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (1/1) ... [2019-10-14 23:36:58,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (1/1) ... [2019-10-14 23:36:58,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (1/1) ... [2019-10-14 23:36:58,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:58,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:58,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:58,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:58,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (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 [2019-10-14 23:36:58,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:58,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:58,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-14 23:36:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:58,448 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:58,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:36:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:36:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:36:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:36:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-14 23:36:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:59,614 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:59,615 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:59,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:59 BoogieIcfgContainer [2019-10-14 23:36:59,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:59,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:59,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:59,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:59,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:57" (1/3) ... [2019-10-14 23:36:59,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ded1ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:59, skipping insertion in model container [2019-10-14 23:36:59,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:58" (2/3) ... [2019-10-14 23:36:59,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ded1ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:59, skipping insertion in model container [2019-10-14 23:36:59,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:59" (3/3) ... [2019-10-14 23:36:59,627 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2019-10-14 23:36:59,637 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:59,646 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:59,657 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:59,683 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:59,683 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:59,683 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:59,684 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:59,684 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:59,684 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:59,684 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:59,684 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2019-10-14 23:36:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:59,729 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:59,730 INFO L380 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] [2019-10-14 23:36:59,734 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2019-10-14 23:36:59,749 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:59,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290858260] [2019-10-14 23:36:59,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:59,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:59,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,424 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:00,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290858260] [2019-10-14 23:37:00,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:00,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:37:00,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747811987] [2019-10-14 23:37:00,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:37:00,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:00,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:37:00,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:37:00,550 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2019-10-14 23:37:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:01,905 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2019-10-14 23:37:01,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:37:01,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:37:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:01,934 INFO L225 Difference]: With dead ends: 341 [2019-10-14 23:37:01,934 INFO L226 Difference]: Without dead ends: 183 [2019-10-14 23:37:01,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:37:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-14 23:37:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2019-10-14 23:37:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-14 23:37:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2019-10-14 23:37:02,086 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2019-10-14 23:37:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:02,086 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2019-10-14 23:37:02,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:37:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2019-10-14 23:37:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:37:02,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:02,091 INFO L380 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] [2019-10-14 23:37:02,091 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:02,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2019-10-14 23:37:02,092 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:02,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287457399] [2019-10-14 23:37:02,092 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:02,092 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:02,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,462 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:02,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287457399] [2019-10-14 23:37:02,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:02,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:37:02,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298295922] [2019-10-14 23:37:02,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:37:02,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:02,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:37:02,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:37:02,503 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 4 states. [2019-10-14 23:37:03,118 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:04,138 INFO L93 Difference]: Finished difference Result 274 states and 336 transitions. [2019-10-14 23:37:04,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:37:04,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:37:04,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:04,141 INFO L225 Difference]: With dead ends: 274 [2019-10-14 23:37:04,142 INFO L226 Difference]: Without dead ends: 167 [2019-10-14 23:37:04,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:37:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2019-10-14 23:37:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2019-10-14 23:37:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-14 23:37:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2019-10-14 23:37:04,225 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2019-10-14 23:37:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:04,225 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2019-10-14 23:37:04,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:37:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2019-10-14 23:37:04,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:37:04,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:04,228 INFO L380 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] [2019-10-14 23:37:04,229 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:04,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:04,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2019-10-14 23:37:04,229 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:04,229 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628073783] [2019-10-14 23:37:04,230 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,230 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,573 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:04,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628073783] [2019-10-14 23:37:04,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:04,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:04,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769371084] [2019-10-14 23:37:04,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:04,761 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:04,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:04,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:04,763 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 8 states. [2019-10-14 23:37:05,308 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:05,699 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:05,995 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:06,257 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:07,774 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2019-10-14 23:37:07,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:07,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:37:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:07,779 INFO L225 Difference]: With dead ends: 283 [2019-10-14 23:37:07,779 INFO L226 Difference]: Without dead ends: 167 [2019-10-14 23:37:07,781 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:07,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2019-10-14 23:37:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2019-10-14 23:37:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-14 23:37:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-10-14 23:37:07,828 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2019-10-14 23:37:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:07,828 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-10-14 23:37:07,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:07,829 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-10-14 23:37:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-14 23:37:07,831 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:07,832 INFO L380 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] [2019-10-14 23:37:07,832 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:07,832 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2019-10-14 23:37:07,833 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:07,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486190121] [2019-10-14 23:37:07,833 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:07,833 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:07,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,176 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:08,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486190121] [2019-10-14 23:37:08,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:08,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:37:08,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769479009] [2019-10-14 23:37:08,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:37:08,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:37:08,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:37:08,283 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 6 states. [2019-10-14 23:37:08,713 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:10,068 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:10,932 INFO L93 Difference]: Finished difference Result 393 states and 487 transitions. [2019-10-14 23:37:10,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:37:10,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-14 23:37:10,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:10,936 INFO L225 Difference]: With dead ends: 393 [2019-10-14 23:37:10,936 INFO L226 Difference]: Without dead ends: 277 [2019-10-14 23:37:10,937 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:37:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-10-14 23:37:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2019-10-14 23:37:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-10-14 23:37:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2019-10-14 23:37:10,993 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2019-10-14 23:37:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:10,993 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2019-10-14 23:37:10,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2019-10-14 23:37:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:10,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:10,996 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:10,996 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:10,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:10,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2019-10-14 23:37:10,997 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:10,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075401330] [2019-10-14 23:37:10,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:10,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:10,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,297 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:11,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075401330] [2019-10-14 23:37:11,444 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:11,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:11,445 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499407477] [2019-10-14 23:37:11,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:11,448 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:11,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:11,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:11,449 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 8 states. [2019-10-14 23:37:11,883 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:13,280 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:13,631 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:13,915 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:14,219 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:15,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:15,199 INFO L93 Difference]: Finished difference Result 614 states and 761 transitions. [2019-10-14 23:37:15,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:15,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-14 23:37:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:15,203 INFO L225 Difference]: With dead ends: 614 [2019-10-14 23:37:15,204 INFO L226 Difference]: Without dead ends: 402 [2019-10-14 23:37:15,205 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2019-10-14 23:37:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 362. [2019-10-14 23:37:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2019-10-14 23:37:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 420 transitions. [2019-10-14 23:37:15,276 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 420 transitions. Word has length 89 [2019-10-14 23:37:15,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:15,277 INFO L462 AbstractCegarLoop]: Abstraction has 362 states and 420 transitions. [2019-10-14 23:37:15,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 420 transitions. [2019-10-14 23:37:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:37:15,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:15,279 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:15,279 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2019-10-14 23:37:15,280 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:15,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052676334] [2019-10-14 23:37:15,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:15,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:15,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,569 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:15,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052676334] [2019-10-14 23:37:15,724 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:15,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:15,725 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281816789] [2019-10-14 23:37:15,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:15,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:15,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:15,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:15,726 INFO L87 Difference]: Start difference. First operand 362 states and 420 transitions. Second operand 10 states. [2019-10-14 23:37:16,376 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:17,957 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:18,271 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:18,559 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:18,809 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:19,186 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:20,739 INFO L93 Difference]: Finished difference Result 839 states and 1057 transitions. [2019-10-14 23:37:20,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:20,739 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2019-10-14 23:37:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:20,745 INFO L225 Difference]: With dead ends: 839 [2019-10-14 23:37:20,745 INFO L226 Difference]: Without dead ends: 616 [2019-10-14 23:37:20,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:37:20,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-14 23:37:20,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 548. [2019-10-14 23:37:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2019-10-14 23:37:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 647 transitions. [2019-10-14 23:37:20,856 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 647 transitions. Word has length 93 [2019-10-14 23:37:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:20,857 INFO L462 AbstractCegarLoop]: Abstraction has 548 states and 647 transitions. [2019-10-14 23:37:20,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 647 transitions. [2019-10-14 23:37:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:37:20,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:20,859 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:20,859 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2019-10-14 23:37:20,860 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:20,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399403701] [2019-10-14 23:37:20,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:20,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:20,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,113 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:21,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399403701] [2019-10-14 23:37:21,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:21,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:21,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165941409] [2019-10-14 23:37:21,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:21,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:21,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:21,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:21,232 INFO L87 Difference]: Start difference. First operand 548 states and 647 transitions. Second operand 8 states. [2019-10-14 23:37:22,217 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:22,475 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:22,755 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:23,966 INFO L93 Difference]: Finished difference Result 1017 states and 1246 transitions. [2019-10-14 23:37:23,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:23,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-14 23:37:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:23,971 INFO L225 Difference]: With dead ends: 1017 [2019-10-14 23:37:23,971 INFO L226 Difference]: Without dead ends: 604 [2019-10-14 23:37:23,974 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2019-10-14 23:37:24,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 548. [2019-10-14 23:37:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2019-10-14 23:37:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 646 transitions. [2019-10-14 23:37:24,077 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 646 transitions. Word has length 93 [2019-10-14 23:37:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:24,078 INFO L462 AbstractCegarLoop]: Abstraction has 548 states and 646 transitions. [2019-10-14 23:37:24,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 646 transitions. [2019-10-14 23:37:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:37:24,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:24,080 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:24,080 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:24,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:24,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2019-10-14 23:37:24,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:24,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414850013] [2019-10-14 23:37:24,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:24,082 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:24,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,355 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:24,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414850013] [2019-10-14 23:37:24,524 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:24,524 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:24,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728987083] [2019-10-14 23:37:24,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:24,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:24,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:24,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:24,537 INFO L87 Difference]: Start difference. First operand 548 states and 646 transitions. Second operand 12 states. [2019-10-14 23:37:25,283 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:25,547 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:25,834 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:26,606 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:26,879 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:27,165 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:27,431 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:28,885 INFO L93 Difference]: Finished difference Result 1115 states and 1370 transitions. [2019-10-14 23:37:28,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:28,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2019-10-14 23:37:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:28,889 INFO L225 Difference]: With dead ends: 1115 [2019-10-14 23:37:28,890 INFO L226 Difference]: Without dead ends: 591 [2019-10-14 23:37:28,891 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:37:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-10-14 23:37:28,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 546. [2019-10-14 23:37:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-14 23:37:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 642 transitions. [2019-10-14 23:37:28,977 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 642 transitions. Word has length 93 [2019-10-14 23:37:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:28,977 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 642 transitions. [2019-10-14 23:37:28,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 642 transitions. [2019-10-14 23:37:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-14 23:37:28,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:28,979 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:28,980 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2019-10-14 23:37:28,980 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:28,981 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586716444] [2019-10-14 23:37:28,981 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:28,981 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:28,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,298 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:29,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586716444] [2019-10-14 23:37:29,462 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:29,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:37:29,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718224817] [2019-10-14 23:37:29,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:37:29,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:29,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:37:29,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:37:29,464 INFO L87 Difference]: Start difference. First operand 546 states and 642 transitions. Second operand 13 states. [2019-10-14 23:37:30,243 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:30,536 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:30,792 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:31,871 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:32,587 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:32,950 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:33,252 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:34,185 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:34,665 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:35,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:35,070 INFO L93 Difference]: Finished difference Result 1107 states and 1324 transitions. [2019-10-14 23:37:35,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:37:35,071 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2019-10-14 23:37:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:35,074 INFO L225 Difference]: With dead ends: 1107 [2019-10-14 23:37:35,075 INFO L226 Difference]: Without dead ends: 585 [2019-10-14 23:37:35,077 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-10-14 23:37:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-10-14 23:37:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 546. [2019-10-14 23:37:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-14 23:37:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 630 transitions. [2019-10-14 23:37:35,184 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 630 transitions. Word has length 94 [2019-10-14 23:37:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:35,186 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 630 transitions. [2019-10-14 23:37:35,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:37:35,186 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 630 transitions. [2019-10-14 23:37:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-14 23:37:35,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:35,190 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:35,191 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:35,191 INFO L82 PathProgramCache]: Analyzing trace with hash -834613817, now seen corresponding path program 1 times [2019-10-14 23:37:35,191 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:35,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110032409] [2019-10-14 23:37:35,192 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:35,192 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:35,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,551 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:37:35,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110032409] [2019-10-14 23:37:35,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548002945] [2019-10-14 23:37:35,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-14 23:37:36,091 INFO L279 TraceCheckSpWp]: Computing forward predicates...