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_spec5_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:41:17,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:41:17,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:41:17,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:41:17,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:41:17,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:41:17,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:41:17,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:41:17,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:41:17,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:41:17,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:41:17,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:41:17,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:41:17,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:41:17,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:41:17,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:41:17,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:41:17,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:41:17,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:41:17,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:41:17,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:41:17,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:41:17,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:41:17,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:41:17,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:41:17,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:41:17,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:41:17,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:41:17,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:41:17,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:41:17,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:41:17,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:41:17,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:41:17,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:41:17,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:41:17,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:41:17,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:41:17,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:41:17,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:41:17,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:41:17,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:41:17,321 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 19:41:17,342 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:41:17,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:41:17,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:41:17,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:41:17,345 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:41:17,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:41:17,346 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:41:17,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:41:17,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:41:17,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:41:17,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:41:17,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:41:17,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:41:17,348 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:41:17,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:41:17,349 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:41:17,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:41:17,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:41:17,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:41:17,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:41:17,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:41:17,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:41:17,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:41:17,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:41:17,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:41:17,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:41:17,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:41:17,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:41:17,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:41:17,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:41:17,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:41:17,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:41:17,643 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:41:17,643 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:41:17,644 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c [2019-10-13 19:41:17,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78d85d76/863827016beb4212bc992a4fb4f39ff8/FLAG03a5f9858 [2019-10-13 19:41:18,288 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:41:18,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c [2019-10-13 19:41:18,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78d85d76/863827016beb4212bc992a4fb4f39ff8/FLAG03a5f9858 [2019-10-13 19:41:18,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78d85d76/863827016beb4212bc992a4fb4f39ff8 [2019-10-13 19:41:18,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:41:18,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:41:18,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:41:18,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:41:18,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:41:18,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:18" (1/1) ... [2019-10-13 19:41:18,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2551e251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:18, skipping insertion in model container [2019-10-13 19:41:18,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:18" (1/1) ... [2019-10-13 19:41:18,583 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:41:18,637 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:41:19,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:41:19,079 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:41:19,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:41:19,217 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:41:19,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19 WrapperNode [2019-10-13 19:41:19,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:41:19,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:41:19,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:41:19,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:41:19,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (1/1) ... [2019-10-13 19:41:19,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (1/1) ... [2019-10-13 19:41:19,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (1/1) ... [2019-10-13 19:41:19,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (1/1) ... [2019-10-13 19:41:19,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (1/1) ... [2019-10-13 19:41:19,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (1/1) ... [2019-10-13 19:41:19,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (1/1) ... [2019-10-13 19:41:19,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:41:19,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:41:19,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:41:19,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:41:19,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (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 19:41:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:41:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:41:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:41:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:41:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:41:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:41:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:41:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:41:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:41:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:41:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:41:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:41:19,389 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:41:19,389 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:41:19,390 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:41:19,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:41:19,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:41:19,393 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:41:19,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:41:19,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:41:19,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:41:19,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:41:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:41:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:41:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:41:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:41:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:41:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:41:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:41:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:41:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:41:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:41:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:41:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:41:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:41:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:41:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:41:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:41:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:41:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:41:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:41:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:41:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:41:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:41:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:41:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:41:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:41:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:41:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:41:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:41:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:41:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:41:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:41:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:41:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:41:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:41:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:41:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:41:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:41:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:41:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:41:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:41:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:41:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:41:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:41:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:41:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:41:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:41:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:41:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:41:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:41:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:41:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:41:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:41:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:41:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:41:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:41:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:41:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:41:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:41:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:41:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:41:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:41:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:41:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:41:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:41:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:41:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:41:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:41:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:41:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:41:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:41:20,558 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:41:20,558 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:41:20,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:20 BoogieIcfgContainer [2019-10-13 19:41:20,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:41:20,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:41:20,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:41:20,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:41:20,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:41:18" (1/3) ... [2019-10-13 19:41:20,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7ff2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:20, skipping insertion in model container [2019-10-13 19:41:20,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:19" (2/3) ... [2019-10-13 19:41:20,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7ff2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:20, skipping insertion in model container [2019-10-13 19:41:20,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:20" (3/3) ... [2019-10-13 19:41:20,575 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product33.cil.c [2019-10-13 19:41:20,585 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:41:20,597 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:41:20,609 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:41:20,646 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:41:20,646 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:41:20,646 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:41:20,647 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:41:20,647 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:41:20,647 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:41:20,647 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:41:20,647 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:41:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-13 19:41:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:41:20,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:20,680 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] [2019-10-13 19:41:20,682 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:20,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:20,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1965832149, now seen corresponding path program 1 times [2019-10-13 19:41:20,698 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:20,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374229253] [2019-10-13 19:41:20,699 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:20,699 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:20,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,437 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:21,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374229253] [2019-10-13 19:41:21,537 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:21,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:41:21,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189451571] [2019-10-13 19:41:21,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:41:21,543 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:21,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:41:21,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:41:21,561 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2019-10-13 19:41:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:22,338 INFO L93 Difference]: Finished difference Result 255 states and 332 transitions. [2019-10-13 19:41:22,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:41:22,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-10-13 19:41:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:22,363 INFO L225 Difference]: With dead ends: 255 [2019-10-13 19:41:22,363 INFO L226 Difference]: Without dead ends: 141 [2019-10-13 19:41:22,370 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:41:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-10-13 19:41:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2019-10-13 19:41:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-10-13 19:41:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2019-10-13 19:41:22,496 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 59 [2019-10-13 19:41:22,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:22,497 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2019-10-13 19:41:22,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:41:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2019-10-13 19:41:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 19:41:22,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:22,503 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] [2019-10-13 19:41:22,503 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:22,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:22,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1025601363, now seen corresponding path program 1 times [2019-10-13 19:41:22,504 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:22,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593688366] [2019-10-13 19:41:22,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:22,505 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:22,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,846 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:22,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593688366] [2019-10-13 19:41:22,901 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:22,901 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:41:22,902 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076338751] [2019-10-13 19:41:22,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:41:22,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:22,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:41:22,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:41:22,905 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 5 states. [2019-10-13 19:41:23,435 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:24,123 INFO L93 Difference]: Finished difference Result 200 states and 244 transitions. [2019-10-13 19:41:24,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:41:24,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-10-13 19:41:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:24,129 INFO L225 Difference]: With dead ends: 200 [2019-10-13 19:41:24,129 INFO L226 Difference]: Without dead ends: 131 [2019-10-13 19:41:24,130 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:41:24,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-10-13 19:41:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2019-10-13 19:41:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-10-13 19:41:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2019-10-13 19:41:24,161 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 60 [2019-10-13 19:41:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:24,162 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2019-10-13 19:41:24,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:41:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2019-10-13 19:41:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-13 19:41:24,164 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:24,165 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] [2019-10-13 19:41:24,165 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1650494658, now seen corresponding path program 1 times [2019-10-13 19:41:24,166 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:24,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975373617] [2019-10-13 19:41:24,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:24,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:24,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,479 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:24,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975373617] [2019-10-13 19:41:24,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:24,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:41:24,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032507726] [2019-10-13 19:41:24,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:41:24,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:24,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:41:24,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:41:24,557 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 5 states. [2019-10-13 19:41:24,909 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:25,576 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2019-10-13 19:41:25,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:41:25,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-10-13 19:41:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:25,581 INFO L225 Difference]: With dead ends: 209 [2019-10-13 19:41:25,582 INFO L226 Difference]: Without dead ends: 131 [2019-10-13 19:41:25,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:41:25,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-10-13 19:41:25,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2019-10-13 19:41:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-10-13 19:41:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2019-10-13 19:41:25,614 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 64 [2019-10-13 19:41:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:25,615 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2019-10-13 19:41:25,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:41:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2019-10-13 19:41:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-13 19:41:25,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:25,617 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] [2019-10-13 19:41:25,618 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:25,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:25,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1464836383, now seen corresponding path program 1 times [2019-10-13 19:41:25,619 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:25,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392500194] [2019-10-13 19:41:25,619 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:25,619 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:25,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:25,951 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:26,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392500194] [2019-10-13 19:41:26,055 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:26,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:41:26,055 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51593037] [2019-10-13 19:41:26,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:41:26,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:41:26,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:41:26,057 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand 7 states. [2019-10-13 19:41:26,485 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:27,874 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:28,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:28,235 INFO L93 Difference]: Finished difference Result 299 states and 376 transitions. [2019-10-13 19:41:28,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:41:28,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2019-10-13 19:41:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:28,241 INFO L225 Difference]: With dead ends: 299 [2019-10-13 19:41:28,241 INFO L226 Difference]: Without dead ends: 221 [2019-10-13 19:41:28,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:41:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-10-13 19:41:28,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 178. [2019-10-13 19:41:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-10-13 19:41:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2019-10-13 19:41:28,286 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 72 [2019-10-13 19:41:28,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:28,287 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2019-10-13 19:41:28,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:41:28,287 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2019-10-13 19:41:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-13 19:41:28,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:28,290 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] [2019-10-13 19:41:28,290 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:28,290 INFO L82 PathProgramCache]: Analyzing trace with hash 402114491, now seen corresponding path program 1 times [2019-10-13 19:41:28,291 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:28,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063573738] [2019-10-13 19:41:28,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:28,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:28,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,611 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:28,765 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 19:41:28,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063573738] [2019-10-13 19:41:28,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:28,767 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:28,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070798087] [2019-10-13 19:41:28,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:28,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:28,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:28,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:28,771 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 9 states. [2019-10-13 19:41:29,275 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:29,999 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:30,701 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:31,083 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:31,567 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:31,836 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:32,207 INFO L93 Difference]: Finished difference Result 370 states and 457 transitions. [2019-10-13 19:41:32,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:41:32,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2019-10-13 19:41:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:32,211 INFO L225 Difference]: With dead ends: 370 [2019-10-13 19:41:32,211 INFO L226 Difference]: Without dead ends: 220 [2019-10-13 19:41:32,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:41:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-10-13 19:41:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 177. [2019-10-13 19:41:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-10-13 19:41:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 204 transitions. [2019-10-13 19:41:32,260 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 204 transitions. Word has length 86 [2019-10-13 19:41:32,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:32,263 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 204 transitions. [2019-10-13 19:41:32,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:32,263 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 204 transitions. [2019-10-13 19:41:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 19:41:32,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:32,272 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] [2019-10-13 19:41:32,272 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1072290173, now seen corresponding path program 1 times [2019-10-13 19:41:32,273 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:32,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389602200] [2019-10-13 19:41:32,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:32,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:32,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,625 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:32,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389602200] [2019-10-13 19:41:32,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:32,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:32,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962235079] [2019-10-13 19:41:32,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:32,776 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:32,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:32,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:32,777 INFO L87 Difference]: Start difference. First operand 177 states and 204 transitions. Second operand 9 states. [2019-10-13 19:41:33,956 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:34,275 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:41:34,538 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:34,793 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:35,335 INFO L93 Difference]: Finished difference Result 368 states and 453 transitions. [2019-10-13 19:41:35,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:41:35,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-10-13 19:41:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:35,338 INFO L225 Difference]: With dead ends: 368 [2019-10-13 19:41:35,338 INFO L226 Difference]: Without dead ends: 219 [2019-10-13 19:41:35,339 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:41:35,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2019-10-13 19:41:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 182. [2019-10-13 19:41:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-13 19:41:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 209 transitions. [2019-10-13 19:41:35,374 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 209 transitions. Word has length 87 [2019-10-13 19:41:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:35,375 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 209 transitions. [2019-10-13 19:41:35,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 209 transitions. [2019-10-13 19:41:35,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 19:41:35,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:35,376 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] [2019-10-13 19:41:35,376 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:35,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:35,377 INFO L82 PathProgramCache]: Analyzing trace with hash 313913221, now seen corresponding path program 1 times [2019-10-13 19:41:35,377 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:35,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118960980] [2019-10-13 19:41:35,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:35,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:35,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,731 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:35,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118960980] [2019-10-13 19:41:35,869 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:35,870 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:41:35,870 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661831170] [2019-10-13 19:41:35,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:41:35,872 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:35,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:41:35,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:41:35,873 INFO L87 Difference]: Start difference. First operand 182 states and 209 transitions. Second operand 11 states. [2019-10-13 19:41:36,589 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:36,859 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:37,112 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:37,915 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:38,202 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:38,475 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:39,152 INFO L93 Difference]: Finished difference Result 380 states and 472 transitions. [2019-10-13 19:41:39,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:41:39,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2019-10-13 19:41:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:39,157 INFO L225 Difference]: With dead ends: 380 [2019-10-13 19:41:39,157 INFO L226 Difference]: Without dead ends: 226 [2019-10-13 19:41:39,158 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:41:39,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2019-10-13 19:41:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 186. [2019-10-13 19:41:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-10-13 19:41:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 213 transitions. [2019-10-13 19:41:39,187 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 213 transitions. Word has length 87 [2019-10-13 19:41:39,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:39,187 INFO L462 AbstractCegarLoop]: Abstraction has 186 states and 213 transitions. [2019-10-13 19:41:39,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:41:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 213 transitions. [2019-10-13 19:41:39,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 19:41:39,189 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:39,189 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] [2019-10-13 19:41:39,189 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:39,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:39,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1869763706, now seen corresponding path program 1 times [2019-10-13 19:41:39,189 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:39,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946592126] [2019-10-13 19:41:39,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:39,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:39,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,509 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:39,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946592126] [2019-10-13 19:41:39,621 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:39,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:41:39,621 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492310321] [2019-10-13 19:41:39,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:41:39,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:39,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:41:39,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:41:39,623 INFO L87 Difference]: Start difference. First operand 186 states and 213 transitions. Second operand 7 states. [2019-10-13 19:41:40,025 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:40,603 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:41,835 INFO L93 Difference]: Finished difference Result 539 states and 681 transitions. [2019-10-13 19:41:41,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:41:41,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2019-10-13 19:41:41,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:41,839 INFO L225 Difference]: With dead ends: 539 [2019-10-13 19:41:41,839 INFO L226 Difference]: Without dead ends: 381 [2019-10-13 19:41:41,841 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:41:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2019-10-13 19:41:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 343. [2019-10-13 19:41:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-13 19:41:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 404 transitions. [2019-10-13 19:41:41,901 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 404 transitions. Word has length 87 [2019-10-13 19:41:41,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:41,901 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 404 transitions. [2019-10-13 19:41:41,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:41:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 404 transitions. [2019-10-13 19:41:41,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 19:41:41,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:41,903 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] [2019-10-13 19:41:41,904 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:41,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1799982100, now seen corresponding path program 1 times [2019-10-13 19:41:41,904 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:41,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873217943] [2019-10-13 19:41:41,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:41,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:41,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,268 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:42,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873217943] [2019-10-13 19:41:42,427 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:42,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:41:42,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840895543] [2019-10-13 19:41:42,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:41:42,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:42,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:41:42,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:41:42,430 INFO L87 Difference]: Start difference. First operand 343 states and 404 transitions. Second operand 12 states. [2019-10-13 19:41:43,281 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:43,996 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:45,063 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:45,404 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:45,681 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:41:45,989 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:46,283 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:47,242 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:47,532 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:48,237 INFO L93 Difference]: Finished difference Result 937 states and 1174 transitions. [2019-10-13 19:41:48,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-13 19:41:48,238 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-13 19:41:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:48,244 INFO L225 Difference]: With dead ends: 937 [2019-10-13 19:41:48,244 INFO L226 Difference]: Without dead ends: 687 [2019-10-13 19:41:48,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 19:41:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2019-10-13 19:41:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 580. [2019-10-13 19:41:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2019-10-13 19:41:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 676 transitions. [2019-10-13 19:41:48,369 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 676 transitions. Word has length 91 [2019-10-13 19:41:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:48,372 INFO L462 AbstractCegarLoop]: Abstraction has 580 states and 676 transitions. [2019-10-13 19:41:48,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:41:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 676 transitions. [2019-10-13 19:41:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 19:41:48,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:48,376 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, 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] [2019-10-13 19:41:48,377 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:48,377 INFO L82 PathProgramCache]: Analyzing trace with hash 476527769, now seen corresponding path program 1 times [2019-10-13 19:41:48,377 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:48,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707452427] [2019-10-13 19:41:48,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:48,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:48,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,738 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 19:41:49,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707452427] [2019-10-13 19:41:49,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353360322] [2019-10-13 19:41:49,005 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 19:41:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:41:49,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:41:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:41:49,428 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:41:49,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-10-13 19:41:49,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194102046] [2019-10-13 19:41:49,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 19:41:49,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:49,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 19:41:49,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:41:49,430 INFO L87 Difference]: Start difference. First operand 580 states and 676 transitions. Second operand 20 states. [2019-10-13 19:41:50,250 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:41:50,653 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:41:50,949 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:41:51,235 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:41:51,917 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:52,230 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:41:52,632 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-10-13 19:41:53,280 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:53,692 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:41:54,777 WARN L191 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2019-10-13 19:41:55,099 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:55,435 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:56,217 WARN L191 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2019-10-13 19:41:56,704 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192