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_spec4_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:39:55,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:39:55,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:39:55,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:39:55,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:39:55,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:39:55,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:39:55,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:39:55,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:39:55,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:39:55,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:39:55,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:39:55,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:39:55,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:39:55,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:39:55,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:39:55,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:39:55,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:39:55,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:39:55,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:39:55,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:39:55,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:39:55,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:39:55,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:39:55,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:39:55,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:39:55,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:39:55,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:39:55,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:39:55,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:39:55,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:39:55,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:39:55,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:39:55,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:39:55,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:39:55,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:39:55,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:39:55,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:39:55,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:39:55,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:39:55,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:39:55,176 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 19:39:55,208 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:39:55,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:39:55,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:39:55,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:39:55,212 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:39:55,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:39:55,212 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:39:55,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:39:55,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:39:55,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:39:55,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:39:55,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:39:55,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:39:55,217 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:39:55,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:39:55,217 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:39:55,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:39:55,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:39:55,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:39:55,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:39:55,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:39:55,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:55,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:39:55,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:39:55,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:39:55,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:39:55,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:39:55,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:39:55,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:39:55,491 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:39:55,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:39:55,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:39:55,516 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:39:55,517 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:39:55,518 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-10-13 19:39:55,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79bfd4ad1/919a28ec0ecd4742a6a6ad62e7c3a47f/FLAG0732fc612 [2019-10-13 19:39:56,196 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:39:56,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-10-13 19:39:56,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79bfd4ad1/919a28ec0ecd4742a6a6ad62e7c3a47f/FLAG0732fc612 [2019-10-13 19:39:56,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79bfd4ad1/919a28ec0ecd4742a6a6ad62e7c3a47f [2019-10-13 19:39:56,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:39:56,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:39:56,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:56,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:39:56,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:39:56,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:56" (1/1) ... [2019-10-13 19:39:56,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2e9cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:56, skipping insertion in model container [2019-10-13 19:39:56,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:56" (1/1) ... [2019-10-13 19:39:56,482 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:39:56,526 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:39:56,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:56,998 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:39:57,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:57,127 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:39:57,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57 WrapperNode [2019-10-13 19:39:57,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:57,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:39:57,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:39:57,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:39:57,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (1/1) ... [2019-10-13 19:39:57,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (1/1) ... [2019-10-13 19:39:57,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (1/1) ... [2019-10-13 19:39:57,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (1/1) ... [2019-10-13 19:39:57,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (1/1) ... [2019-10-13 19:39:57,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (1/1) ... [2019-10-13 19:39:57,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (1/1) ... [2019-10-13 19:39:57,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:39:57,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:39:57,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:39:57,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:39:57,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (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 19:39:57,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:39:57,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:39:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:39:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:39:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:39:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:39:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:39:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:39:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:39:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:39:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:39:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:39:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:39:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:39:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:39:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:39:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:39:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:39:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:39:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:39:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:39:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:39:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:39:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:39:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:39:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:39:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:39:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:39:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:39:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:39:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:39:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:39:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:39:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:39:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:39:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:39:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:39:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:39:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:39:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:39:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:39:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:39:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:39:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:39:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:39:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:39:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:39:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:39:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:39:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:39:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:39:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:39:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:39:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:39:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:39:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:39:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:39:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:39:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:39:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:39:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:39:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:39:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:39:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:39:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:39:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:39:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:39:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:39:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:39:58,301 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:39:58,302 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:39:58,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:58 BoogieIcfgContainer [2019-10-13 19:39:58,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:39:58,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:39:58,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:39:58,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:39:58,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:39:56" (1/3) ... [2019-10-13 19:39:58,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7b7afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:58, skipping insertion in model container [2019-10-13 19:39:58,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:57" (2/3) ... [2019-10-13 19:39:58,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7b7afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:58, skipping insertion in model container [2019-10-13 19:39:58,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:58" (3/3) ... [2019-10-13 19:39:58,313 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product57.cil.c [2019-10-13 19:39:58,324 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:39:58,332 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:39:58,344 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:39:58,378 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:39:58,379 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:39:58,379 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:39:58,379 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:39:58,379 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:39:58,380 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:39:58,380 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:39:58,380 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:39:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2019-10-13 19:39:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:39:58,423 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:58,425 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:58,429 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:58,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1827061433, now seen corresponding path program 1 times [2019-10-13 19:39:58,447 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:58,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686682206] [2019-10-13 19:39:58,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:58,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:58,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:59,105 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:59,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686682206] [2019-10-13 19:39:59,190 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:59,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:39:59,192 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934203105] [2019-10-13 19:39:59,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:39:59,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:59,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:39:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:59,218 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2019-10-13 19:40:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:00,429 INFO L93 Difference]: Finished difference Result 329 states and 422 transitions. [2019-10-13 19:40:00,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:40:00,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:40:00,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:00,459 INFO L225 Difference]: With dead ends: 329 [2019-10-13 19:40:00,460 INFO L226 Difference]: Without dead ends: 177 [2019-10-13 19:40:00,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:40:00,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-10-13 19:40:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2019-10-13 19:40:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-10-13 19:40:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2019-10-13 19:40:00,596 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 46 [2019-10-13 19:40:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:00,598 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2019-10-13 19:40:00,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:40:00,599 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2019-10-13 19:40:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:40:00,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:00,607 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:00,607 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:00,609 INFO L82 PathProgramCache]: Analyzing trace with hash 632131827, now seen corresponding path program 1 times [2019-10-13 19:40:00,609 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:00,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563530383] [2019-10-13 19:40:00,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:00,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:00,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,041 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:01,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563530383] [2019-10-13 19:40:01,073 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:01,073 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:40:01,073 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214089790] [2019-10-13 19:40:01,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:40:01,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:01,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:40:01,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:40:01,076 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand 4 states. [2019-10-13 19:40:01,503 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:02,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:02,354 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2019-10-13 19:40:02,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:02,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:40:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:02,358 INFO L225 Difference]: With dead ends: 262 [2019-10-13 19:40:02,358 INFO L226 Difference]: Without dead ends: 161 [2019-10-13 19:40:02,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:40:02,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-13 19:40:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2019-10-13 19:40:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-13 19:40:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2019-10-13 19:40:02,427 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 47 [2019-10-13 19:40:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:02,427 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2019-10-13 19:40:02,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:40:02,427 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2019-10-13 19:40:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:40:02,429 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:02,429 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:02,430 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 880596518, now seen corresponding path program 1 times [2019-10-13 19:40:02,430 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:02,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627089545] [2019-10-13 19:40:02,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:02,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:02,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,750 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:02,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627089545] [2019-10-13 19:40:02,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:02,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:40:02,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621856806] [2019-10-13 19:40:02,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:02,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:02,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:02,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:40:02,821 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand 8 states. [2019-10-13 19:40:03,288 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:03,659 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:03,933 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:04,175 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:05,559 INFO L93 Difference]: Finished difference Result 271 states and 327 transitions. [2019-10-13 19:40:05,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:40:05,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:40:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:05,562 INFO L225 Difference]: With dead ends: 271 [2019-10-13 19:40:05,562 INFO L226 Difference]: Without dead ends: 161 [2019-10-13 19:40:05,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-13 19:40:05,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2019-10-13 19:40:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-13 19:40:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2019-10-13 19:40:05,600 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 51 [2019-10-13 19:40:05,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:05,600 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2019-10-13 19:40:05,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2019-10-13 19:40:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-13 19:40:05,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:05,602 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:05,603 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:05,603 INFO L82 PathProgramCache]: Analyzing trace with hash -316946775, now seen corresponding path program 1 times [2019-10-13 19:40:05,604 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:05,604 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339871978] [2019-10-13 19:40:05,604 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:05,604 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:05,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,948 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:06,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339871978] [2019-10-13 19:40:06,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:06,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:40:06,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525580866] [2019-10-13 19:40:06,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:06,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:06,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:06,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:40:06,031 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 6 states. [2019-10-13 19:40:06,383 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:07,700 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:08,454 INFO L93 Difference]: Finished difference Result 363 states and 443 transitions. [2019-10-13 19:40:08,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:40:08,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2019-10-13 19:40:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:08,457 INFO L225 Difference]: With dead ends: 363 [2019-10-13 19:40:08,457 INFO L226 Difference]: Without dead ends: 253 [2019-10-13 19:40:08,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-10-13 19:40:08,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 212. [2019-10-13 19:40:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-10-13 19:40:08,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 240 transitions. [2019-10-13 19:40:08,508 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 240 transitions. Word has length 64 [2019-10-13 19:40:08,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:08,509 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 240 transitions. [2019-10-13 19:40:08,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 240 transitions. [2019-10-13 19:40:08,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 19:40:08,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:08,511 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:08,511 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:08,512 INFO L82 PathProgramCache]: Analyzing trace with hash 924041624, now seen corresponding path program 1 times [2019-10-13 19:40:08,512 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:08,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378860649] [2019-10-13 19:40:08,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:08,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:08,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,853 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:09,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378860649] [2019-10-13 19:40:09,009 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:09,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:40:09,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534152297] [2019-10-13 19:40:09,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:40:09,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:09,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:40:09,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:09,011 INFO L87 Difference]: Start difference. First operand 212 states and 240 transitions. Second operand 12 states. [2019-10-13 19:40:09,641 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:09,992 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:10,305 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:10,561 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:11,164 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:12,106 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:12,435 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:12,712 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:13,042 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:13,397 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:13,685 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:15,264 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:15,670 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:16,381 INFO L93 Difference]: Finished difference Result 745 states and 951 transitions. [2019-10-13 19:40:16,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:16,384 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2019-10-13 19:40:16,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:16,390 INFO L225 Difference]: With dead ends: 745 [2019-10-13 19:40:16,391 INFO L226 Difference]: Without dead ends: 557 [2019-10-13 19:40:16,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2019-10-13 19:40:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 499. [2019-10-13 19:40:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-10-13 19:40:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 583 transitions. [2019-10-13 19:40:16,504 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 583 transitions. Word has length 78 [2019-10-13 19:40:16,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:16,505 INFO L462 AbstractCegarLoop]: Abstraction has 499 states and 583 transitions. [2019-10-13 19:40:16,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 583 transitions. [2019-10-13 19:40:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 19:40:16,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:16,509 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:16,509 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:16,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1813775950, now seen corresponding path program 1 times [2019-10-13 19:40:16,510 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:16,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720324657] [2019-10-13 19:40:16,510 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:16,511 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:16,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,839 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 19:40:17,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720324657] [2019-10-13 19:40:17,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642140427] [2019-10-13 19:40:17,002 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 19:40:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:40:17,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:17,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:17,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-13 19:40:17,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941098966] [2019-10-13 19:40:17,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:17,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:17,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:17,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:40:17,460 INFO L87 Difference]: Start difference. First operand 499 states and 583 transitions. Second operand 8 states. [2019-10-13 19:40:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:18,710 INFO L93 Difference]: Finished difference Result 1250 states and 1614 transitions. [2019-10-13 19:40:18,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:40:18,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2019-10-13 19:40:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:18,718 INFO L225 Difference]: With dead ends: 1250 [2019-10-13 19:40:18,718 INFO L226 Difference]: Without dead ends: 892 [2019-10-13 19:40:18,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:40:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2019-10-13 19:40:18,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 821. [2019-10-13 19:40:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-10-13 19:40:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1002 transitions. [2019-10-13 19:40:18,886 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1002 transitions. Word has length 136 [2019-10-13 19:40:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:18,887 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 1002 transitions. [2019-10-13 19:40:18,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1002 transitions. [2019-10-13 19:40:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:40:18,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:18,890 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:19,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:19,097 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:19,098 INFO L82 PathProgramCache]: Analyzing trace with hash 173885476, now seen corresponding path program 1 times [2019-10-13 19:40:19,099 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:19,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280435808] [2019-10-13 19:40:19,099 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:19,100 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:19,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,380 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:40:19,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280435808] [2019-10-13 19:40:19,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171260734] [2019-10-13 19:40:19,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:19,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:19,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:40:19,788 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:19,789 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-13 19:40:19,789 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372381276] [2019-10-13 19:40:19,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:19,790 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:40:19,790 INFO L87 Difference]: Start difference. First operand 821 states and 1002 transitions. Second operand 6 states. [2019-10-13 19:40:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:20,020 INFO L93 Difference]: Finished difference Result 1646 states and 2084 transitions. [2019-10-13 19:40:20,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:40:20,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-10-13 19:40:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:20,030 INFO L225 Difference]: With dead ends: 1646 [2019-10-13 19:40:20,030 INFO L226 Difference]: Without dead ends: 849 [2019-10-13 19:40:20,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2019-10-13 19:40:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 841. [2019-10-13 19:40:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2019-10-13 19:40:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1026 transitions. [2019-10-13 19:40:20,211 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1026 transitions. Word has length 143 [2019-10-13 19:40:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:20,212 INFO L462 AbstractCegarLoop]: Abstraction has 841 states and 1026 transitions. [2019-10-13 19:40:20,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1026 transitions. [2019-10-13 19:40:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:40:20,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:20,216 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:20,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:20,421 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:20,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:20,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1445089438, now seen corresponding path program 1 times [2019-10-13 19:40:20,422 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:20,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915771331] [2019-10-13 19:40:20,423 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:20,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:20,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,696 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:40:20,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915771331] [2019-10-13 19:40:20,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795094516] [2019-10-13 19:40:20,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:40:21,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:40:21,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:21,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-10-13 19:40:21,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612874388] [2019-10-13 19:40:21,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:40:21,168 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:21,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:40:21,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:21,169 INFO L87 Difference]: Start difference. First operand 841 states and 1026 transitions. Second operand 5 states. [2019-10-13 19:40:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:21,353 INFO L93 Difference]: Finished difference Result 1482 states and 1850 transitions. [2019-10-13 19:40:21,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:21,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-13 19:40:21,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:21,359 INFO L225 Difference]: With dead ends: 1482 [2019-10-13 19:40:21,359 INFO L226 Difference]: Without dead ends: 665 [2019-10-13 19:40:21,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-10-13 19:40:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2019-10-13 19:40:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-10-13 19:40:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 804 transitions. [2019-10-13 19:40:21,493 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 804 transitions. Word has length 143 [2019-10-13 19:40:21,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:21,494 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 804 transitions. [2019-10-13 19:40:21,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:40:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 804 transitions. [2019-10-13 19:40:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:40:21,496 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:21,496 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:21,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:21,701 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash -416837817, now seen corresponding path program 1 times [2019-10-13 19:40:21,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:21,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446924032] [2019-10-13 19:40:21,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:21,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:21,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,029 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:40:22,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446924032] [2019-10-13 19:40:22,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878199079] [2019-10-13 19:40:22,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:22,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:22,510 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:22,510 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-10-13 19:40:22,511 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654368446] [2019-10-13 19:40:22,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 19:40:22,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:22,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 19:40:22,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:40:22,512 INFO L87 Difference]: Start difference. First operand 665 states and 804 transitions. Second operand 17 states. [2019-10-13 19:40:23,274 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:24,072 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:25,165 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:25,496 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:25,777 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:26,311 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2019-10-13 19:40:26,639 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:26,943 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:27,756 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:28,038 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:40:28,369 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:28,665 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:29,386 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:29,677 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:29,942 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:30,218 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:31,586 INFO L93 Difference]: Finished difference Result 1352 states and 1730 transitions. [2019-10-13 19:40:31,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-13 19:40:31,587 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 147 [2019-10-13 19:40:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:31,593 INFO L225 Difference]: With dead ends: 1352 [2019-10-13 19:40:31,593 INFO L226 Difference]: Without dead ends: 770 [2019-10-13 19:40:31,596 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=431, Invalid=1461, Unknown=0, NotChecked=0, Total=1892 [2019-10-13 19:40:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2019-10-13 19:40:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 662. [2019-10-13 19:40:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2019-10-13 19:40:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 795 transitions. [2019-10-13 19:40:31,739 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 795 transitions. Word has length 147 [2019-10-13 19:40:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:31,740 INFO L462 AbstractCegarLoop]: Abstraction has 662 states and 795 transitions. [2019-10-13 19:40:31,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 19:40:31,740 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 795 transitions. [2019-10-13 19:40:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 19:40:31,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:31,744 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:31,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:31,959 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:31,960 INFO L82 PathProgramCache]: Analyzing trace with hash -121591931, now seen corresponding path program 1 times [2019-10-13 19:40:31,961 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:31,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131100] [2019-10-13 19:40:31,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:31,962 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:31,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,331 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 19:40:32,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131100] [2019-10-13 19:40:32,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74488003] [2019-10-13 19:40:32,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:32,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:40:32,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:32,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:40:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 79 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:40:32,931 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:32,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-10-13 19:40:32,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206487811] [2019-10-13 19:40:32,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 19:40:32,932 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:32,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 19:40:32,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:40:32,933 INFO L87 Difference]: Start difference. First operand 662 states and 795 transitions. Second operand 18 states.