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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:38:03,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:38:03,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:38:03,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:38:03,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:38:03,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:38:03,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:38:03,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:38:03,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:38:03,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:38:03,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:38:03,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:38:03,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:38:03,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:38:03,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:38:03,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:38:03,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:38:03,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:38:03,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:38:03,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:38:03,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:38:03,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:38:03,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:38:03,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:38:03,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:38:03,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:38:03,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:38:03,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:38:03,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:38:03,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:38:03,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:38:03,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:38:03,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:38:03,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:38:03,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:38:03,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:38:03,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:38:03,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:38:03,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:38:03,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:38:03,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:38:03,135 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 [2019-10-13 19:38:03,150 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:38:03,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:38:03,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:38:03,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:38:03,152 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:38:03,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:38:03,152 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:38:03,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:38:03,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:38:03,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:38:03,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:38:03,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:38:03,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:38:03,154 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:38:03,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:38:03,154 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:38:03,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:38:03,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:38:03,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:38:03,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:38:03,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:38:03,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:38:03,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:38:03,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:38:03,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:38:03,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:38:03,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:38:03,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:38:03,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:38:03,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:38:03,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:38:03,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:38:03,530 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:38:03,531 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:38:03,531 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2019-10-13 19:38:03,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08afa6f63/fbae1bd2ebcf44fdb32e1d0a6581a3bc/FLAG1ffd47a24 [2019-10-13 19:38:04,148 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:38:04,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2019-10-13 19:38:04,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08afa6f63/fbae1bd2ebcf44fdb32e1d0a6581a3bc/FLAG1ffd47a24 [2019-10-13 19:38:04,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08afa6f63/fbae1bd2ebcf44fdb32e1d0a6581a3bc [2019-10-13 19:38:04,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:38:04,468 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:38:04,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:38:04,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:38:04,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:38:04,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:04" (1/1) ... [2019-10-13 19:38:04,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4626f4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:04, skipping insertion in model container [2019-10-13 19:38:04,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:04" (1/1) ... [2019-10-13 19:38:04,486 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:38:04,539 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:38:05,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:38:05,031 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:38:05,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:38:05,194 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:38:05,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05 WrapperNode [2019-10-13 19:38:05,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:38:05,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:38:05,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:38:05,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:38:05,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (1/1) ... [2019-10-13 19:38:05,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (1/1) ... [2019-10-13 19:38:05,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (1/1) ... [2019-10-13 19:38:05,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (1/1) ... [2019-10-13 19:38:05,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (1/1) ... [2019-10-13 19:38:05,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (1/1) ... [2019-10-13 19:38:05,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (1/1) ... [2019-10-13 19:38:05,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:38:05,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:38:05,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:38:05,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:38:05,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (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 [2019-10-13 19:38:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:38:05,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:38:05,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:38:05,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:38:05,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:38:05,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:38:05,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:38:05,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:38:05,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:38:05,391 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:38:05,391 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:38:05,392 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:38:05,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:38:05,392 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:38:05,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:38:05,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:38:05,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:38:05,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:38:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:38:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:38:05,399 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:38:05,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:38:05,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:38:05,399 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:38:05,400 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:38:05,400 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:38:05,400 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:38:05,400 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:38:05,400 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:38:05,400 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:38:05,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:38:05,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:38:05,401 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:38:05,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:38:05,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:38:05,402 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:38:05,402 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:38:05,402 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:38:05,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:38:05,402 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:38:05,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:38:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:38:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:38:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:38:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:38:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:38:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:38:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:38:05,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:38:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:38:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:38:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:38:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:38:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:38:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:38:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:38:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:38:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:38:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:38:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:38:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:38:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:38:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:38:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:38:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:38:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:38:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:38:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:38:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:38:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:38:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:38:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:38:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:38:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:38:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:38:06,649 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:38:06,650 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:38:06,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:06 BoogieIcfgContainer [2019-10-13 19:38:06,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:38:06,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:38:06,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:38:06,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:38:06,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:38:04" (1/3) ... [2019-10-13 19:38:06,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3baf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:06, skipping insertion in model container [2019-10-13 19:38:06,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:05" (2/3) ... [2019-10-13 19:38:06,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3baf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:06, skipping insertion in model container [2019-10-13 19:38:06,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:06" (3/3) ... [2019-10-13 19:38:06,663 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product57.cil.c [2019-10-13 19:38:06,673 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:38:06,683 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:38:06,695 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:38:06,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:38:06,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:38:06,726 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:38:06,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:38:06,726 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:38:06,726 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:38:06,726 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:38:06,726 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:38:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-13 19:38:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:38:06,763 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:06,764 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] [2019-10-13 19:38:06,767 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:06,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1038310593, now seen corresponding path program 1 times [2019-10-13 19:38:06,779 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:06,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694888830] [2019-10-13 19:38:06,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:06,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:06,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,444 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:07,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694888830] [2019-10-13 19:38:07,546 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:07,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:38:07,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496608220] [2019-10-13 19:38:07,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:38:07,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:07,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:38:07,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:38:07,574 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2019-10-13 19:38:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:08,774 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2019-10-13 19:38:08,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:38:08,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:38:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:08,791 INFO L225 Difference]: With dead ends: 335 [2019-10-13 19:38:08,792 INFO L226 Difference]: Without dead ends: 180 [2019-10-13 19:38:08,797 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 [2019-10-13 19:38:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-10-13 19:38:08,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2019-10-13 19:38:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-10-13 19:38:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2019-10-13 19:38:08,920 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 52 [2019-10-13 19:38:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:08,920 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2019-10-13 19:38:08,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:38:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2019-10-13 19:38:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:38:08,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:08,934 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] [2019-10-13 19:38:08,934 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2043760100, now seen corresponding path program 1 times [2019-10-13 19:38:08,936 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:08,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713497364] [2019-10-13 19:38:08,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:08,937 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:08,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,337 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:09,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713497364] [2019-10-13 19:38:09,404 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:09,404 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:38:09,404 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960952196] [2019-10-13 19:38:09,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:38:09,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:09,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:38:09,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:38:09,407 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 4 states. [2019-10-13 19:38:09,841 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:10,801 INFO L93 Difference]: Finished difference Result 268 states and 323 transitions. [2019-10-13 19:38:10,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:38:10,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:38:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:10,806 INFO L225 Difference]: With dead ends: 268 [2019-10-13 19:38:10,806 INFO L226 Difference]: Without dead ends: 164 [2019-10-13 19:38:10,808 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:38:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-13 19:38:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-10-13 19:38:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-13 19:38:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2019-10-13 19:38:10,846 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 53 [2019-10-13 19:38:10,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:10,846 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2019-10-13 19:38:10,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:38:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2019-10-13 19:38:10,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:38:10,848 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:10,849 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] [2019-10-13 19:38:10,849 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:10,849 INFO L82 PathProgramCache]: Analyzing trace with hash -69539003, now seen corresponding path program 1 times [2019-10-13 19:38:10,849 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:10,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842779728] [2019-10-13 19:38:10,850 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:10,850 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:10,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,342 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:11,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842779728] [2019-10-13 19:38:11,459 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:11,459 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:11,459 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128078426] [2019-10-13 19:38:11,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:11,460 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:11,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:11,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:11,462 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 8 states. [2019-10-13 19:38:11,947 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:12,276 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:12,555 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:12,835 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:14,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:14,205 INFO L93 Difference]: Finished difference Result 277 states and 337 transitions. [2019-10-13 19:38:14,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:14,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:38:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:14,209 INFO L225 Difference]: With dead ends: 277 [2019-10-13 19:38:14,209 INFO L226 Difference]: Without dead ends: 164 [2019-10-13 19:38:14,210 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-13 19:38:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-10-13 19:38:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-13 19:38:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2019-10-13 19:38:14,261 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 57 [2019-10-13 19:38:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:14,262 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2019-10-13 19:38:14,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2019-10-13 19:38:14,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:38:14,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:14,265 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] [2019-10-13 19:38:14,265 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:14,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1758854223, now seen corresponding path program 1 times [2019-10-13 19:38:14,266 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:14,266 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194805471] [2019-10-13 19:38:14,266 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,266 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,550 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:14,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194805471] [2019-10-13 19:38:14,674 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:14,674 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:38:14,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337760056] [2019-10-13 19:38:14,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:38:14,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:14,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:38:14,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:38:14,678 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand 6 states. [2019-10-13 19:38:15,014 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:16,256 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:17,082 INFO L93 Difference]: Finished difference Result 381 states and 467 transitions. [2019-10-13 19:38:17,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:38:17,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-13 19:38:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:17,086 INFO L225 Difference]: With dead ends: 381 [2019-10-13 19:38:17,087 INFO L226 Difference]: Without dead ends: 268 [2019-10-13 19:38:17,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:38:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-10-13 19:38:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 227. [2019-10-13 19:38:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-10-13 19:38:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 259 transitions. [2019-10-13 19:38:17,168 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 259 transitions. Word has length 70 [2019-10-13 19:38:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:17,168 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 259 transitions. [2019-10-13 19:38:17,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:38:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 259 transitions. [2019-10-13 19:38:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:38:17,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:17,171 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] [2019-10-13 19:38:17,172 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:17,172 INFO L82 PathProgramCache]: Analyzing trace with hash 19039556, now seen corresponding path program 1 times [2019-10-13 19:38:17,172 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:17,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388719510] [2019-10-13 19:38:17,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:17,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:17,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,469 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:17,609 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388719510] [2019-10-13 19:38:17,609 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:17,610 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:17,610 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514090992] [2019-10-13 19:38:17,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:17,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:17,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:17,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:17,611 INFO L87 Difference]: Start difference. First operand 227 states and 259 transitions. Second operand 8 states. [2019-10-13 19:38:17,979 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:19,527 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:19,826 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:20,097 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:20,352 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:21,196 INFO L93 Difference]: Finished difference Result 603 states and 748 transitions. [2019-10-13 19:38:21,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:38:21,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-13 19:38:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:21,205 INFO L225 Difference]: With dead ends: 603 [2019-10-13 19:38:21,205 INFO L226 Difference]: Without dead ends: 400 [2019-10-13 19:38:21,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:21,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2019-10-13 19:38:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 360. [2019-10-13 19:38:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2019-10-13 19:38:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 419 transitions. [2019-10-13 19:38:21,277 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 419 transitions. Word has length 84 [2019-10-13 19:38:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:21,277 INFO L462 AbstractCegarLoop]: Abstraction has 360 states and 419 transitions. [2019-10-13 19:38:21,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 419 transitions. [2019-10-13 19:38:21,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:38:21,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:21,279 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] [2019-10-13 19:38:21,280 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1361015554, now seen corresponding path program 1 times [2019-10-13 19:38:21,280 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:21,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403195664] [2019-10-13 19:38:21,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:21,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:21,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,641 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:21,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403195664] [2019-10-13 19:38:21,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:21,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:38:21,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159048176] [2019-10-13 19:38:21,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:38:21,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:21,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:38:21,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:21,756 INFO L87 Difference]: Start difference. First operand 360 states and 419 transitions. Second operand 10 states. [2019-10-13 19:38:22,461 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:24,130 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:24,439 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:24,709 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:24,947 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:25,281 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:26,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:26,588 INFO L93 Difference]: Finished difference Result 819 states and 1032 transitions. [2019-10-13 19:38:26,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:38:26,590 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-13 19:38:26,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:26,594 INFO L225 Difference]: With dead ends: 819 [2019-10-13 19:38:26,595 INFO L226 Difference]: Without dead ends: 605 [2019-10-13 19:38:26,596 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:38:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-13 19:38:26,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 537. [2019-10-13 19:38:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-13 19:38:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 634 transitions. [2019-10-13 19:38:26,677 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 634 transitions. Word has length 88 [2019-10-13 19:38:26,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:26,677 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 634 transitions. [2019-10-13 19:38:26,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:38:26,677 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 634 transitions. [2019-10-13 19:38:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:38:26,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:26,680 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] [2019-10-13 19:38:26,680 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:26,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash 2011268159, now seen corresponding path program 1 times [2019-10-13 19:38:26,681 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:26,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119653122] [2019-10-13 19:38:26,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:26,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:26,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,945 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:27,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119653122] [2019-10-13 19:38:27,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:27,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:27,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635789021] [2019-10-13 19:38:27,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:27,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:27,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:27,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:27,113 INFO L87 Difference]: Start difference. First operand 537 states and 634 transitions. Second operand 8 states. [2019-10-13 19:38:28,019 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:28,301 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:28,582 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:29,773 INFO L93 Difference]: Finished difference Result 988 states and 1209 transitions. [2019-10-13 19:38:29,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:29,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-13 19:38:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:29,780 INFO L225 Difference]: With dead ends: 988 [2019-10-13 19:38:29,780 INFO L226 Difference]: Without dead ends: 593 [2019-10-13 19:38:29,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:29,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-13 19:38:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 537. [2019-10-13 19:38:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-13 19:38:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 633 transitions. [2019-10-13 19:38:29,871 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 633 transitions. Word has length 88 [2019-10-13 19:38:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:29,872 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 633 transitions. [2019-10-13 19:38:29,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 633 transitions. [2019-10-13 19:38:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:38:29,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:29,874 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] [2019-10-13 19:38:29,874 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:29,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1167262657, now seen corresponding path program 1 times [2019-10-13 19:38:29,875 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:29,875 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778735942] [2019-10-13 19:38:29,875 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:29,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:29,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,202 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:30,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778735942] [2019-10-13 19:38:30,375 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:30,379 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:30,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350842738] [2019-10-13 19:38:30,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:30,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:30,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:30,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:30,389 INFO L87 Difference]: Start difference. First operand 537 states and 633 transitions. Second operand 12 states. [2019-10-13 19:38:31,116 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:31,365 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:31,633 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:32,352 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:32,625 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:32,925 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:33,193 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:34,700 INFO L93 Difference]: Finished difference Result 1117 states and 1376 transitions. [2019-10-13 19:38:34,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:34,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-13 19:38:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:34,707 INFO L225 Difference]: With dead ends: 1117 [2019-10-13 19:38:34,707 INFO L226 Difference]: Without dead ends: 604 [2019-10-13 19:38:34,710 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:38:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2019-10-13 19:38:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 544. [2019-10-13 19:38:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-10-13 19:38:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 640 transitions. [2019-10-13 19:38:34,817 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 640 transitions. Word has length 88 [2019-10-13 19:38:34,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:34,817 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 640 transitions. [2019-10-13 19:38:34,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 640 transitions. [2019-10-13 19:38:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 19:38:34,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:34,826 INFO L380 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] [2019-10-13 19:38:34,826 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1269276973, now seen corresponding path program 1 times [2019-10-13 19:38:34,827 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:34,828 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612304032] [2019-10-13 19:38:34,828 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:34,828 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:34,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,216 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:35,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612304032] [2019-10-13 19:38:35,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585355396] [2019-10-13 19:38:35,493 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 [2019-10-13 19:38:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:35,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 19:38:35,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:35,983 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:38:35,983 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-13 19:38:35,983 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727206624] [2019-10-13 19:38:35,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:35,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:35,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:35,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:35,985 INFO L87 Difference]: Start difference. First operand 544 states and 640 transitions. Second operand 8 states. [2019-10-13 19:38:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:36,592 INFO L93 Difference]: Finished difference Result 1571 states and 1888 transitions. [2019-10-13 19:38:36,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:36,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2019-10-13 19:38:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:36,601 INFO L225 Difference]: With dead ends: 1571 [2019-10-13 19:38:36,601 INFO L226 Difference]: Without dead ends: 1051 [2019-10-13 19:38:36,604 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2019-10-13 19:38:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1048. [2019-10-13 19:38:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-10-13 19:38:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1236 transitions. [2019-10-13 19:38:36,804 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1236 transitions. Word has length 100 [2019-10-13 19:38:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:36,806 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1236 transitions. [2019-10-13 19:38:36,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1236 transitions. [2019-10-13 19:38:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:38:36,810 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:36,810 INFO L380 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] [2019-10-13 19:38:37,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:38:37,015 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:37,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:37,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2017960913, now seen corresponding path program 1 times [2019-10-13 19:38:37,016 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:37,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690410417] [2019-10-13 19:38:37,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:37,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:37,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,402 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:37,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690410417] [2019-10-13 19:38:37,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:37,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 19:38:37,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225649072] [2019-10-13 19:38:37,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:38:37,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:37,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:38:37,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:37,540 INFO L87 Difference]: Start difference. First operand 1048 states and 1236 transitions. Second operand 14 states. [2019-10-13 19:38:38,221 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:38,531 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:38,815 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:39,493 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:40,510 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:40,960 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:41,719 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:42,024 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:42,334 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190