/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:01:05,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:01:05,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:01:05,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:01:05,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:01:05,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:01:05,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:01:05,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:01:05,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:01:05,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:01:05,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:01:05,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:01:05,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:01:05,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:01:05,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:01:05,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:01:05,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:01:05,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:01:05,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:01:05,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:01:05,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:01:05,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:01:05,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:01:05,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:01:05,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:01:05,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:01:05,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:01:05,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:01:05,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:01:05,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:01:05,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:01:05,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:01:05,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:01:05,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:01:05,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:01:05,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:01:05,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:01:05,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:01:05,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:01:05,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:01:05,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:01:05,215 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 [2019-11-06 22:01:05,229 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:01:05,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:01:05,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:01:05,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:01:05,230 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:01:05,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:01:05,231 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:01:05,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:01:05,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:01:05,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:01:05,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:01:05,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:01:05,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:01:05,232 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:01:05,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:01:05,233 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:01:05,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:01:05,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:01:05,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:01:05,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:01:05,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:01:05,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:01:05,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:01:05,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:01:05,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:01:05,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:01:05,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:01:05,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:01:05,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:01:05,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:01:05,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:01:05,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:01:05,550 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:01:05,550 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:01:05,551 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product61.cil.c [2019-11-06 22:01:05,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ef6f906/36d1cea8931b45cb8051fdb639b0e1b0/FLAGc8c098af4 [2019-11-06 22:01:06,176 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:01:06,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product61.cil.c [2019-11-06 22:01:06,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ef6f906/36d1cea8931b45cb8051fdb639b0e1b0/FLAGc8c098af4 [2019-11-06 22:01:06,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ef6f906/36d1cea8931b45cb8051fdb639b0e1b0 [2019-11-06 22:01:06,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:01:06,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:01:06,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:01:06,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:01:06,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:01:06,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:06" (1/1) ... [2019-11-06 22:01:06,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217be98c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:06, skipping insertion in model container [2019-11-06 22:01:06,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:06" (1/1) ... [2019-11-06 22:01:06,499 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:01:06,544 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:01:07,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:01:07,049 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:01:07,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:01:07,198 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:01:07,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07 WrapperNode [2019-11-06 22:01:07,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:01:07,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:01:07,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:01:07,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:01:07,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (1/1) ... [2019-11-06 22:01:07,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (1/1) ... [2019-11-06 22:01:07,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (1/1) ... [2019-11-06 22:01:07,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (1/1) ... [2019-11-06 22:01:07,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (1/1) ... [2019-11-06 22:01:07,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (1/1) ... [2019-11-06 22:01:07,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (1/1) ... [2019-11-06 22:01:07,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:01:07,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:01:07,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:01:07,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:01:07,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (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 [2019-11-06 22:01:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:01:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:01:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:01:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:01:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:01:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:01:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:01:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:01:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:01:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:01:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:01:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:01:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:01:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:01:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:01:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:01:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:01:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:01:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:01:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:01:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:01:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:01:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:01:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:01:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:01:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:01:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:01:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:01:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:01:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:01:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:01:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:01:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:01:08,484 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:01:08,484 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:01:08,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:08 BoogieIcfgContainer [2019-11-06 22:01:08,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:01:08,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:01:08,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:01:08,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:01:08,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:01:06" (1/3) ... [2019-11-06 22:01:08,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d8cb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:08, skipping insertion in model container [2019-11-06 22:01:08,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:07" (2/3) ... [2019-11-06 22:01:08,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d8cb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:08, skipping insertion in model container [2019-11-06 22:01:08,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:08" (3/3) ... [2019-11-06 22:01:08,495 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product61.cil.c [2019-11-06 22:01:08,505 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:01:08,516 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:01:08,528 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:01:08,562 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:01:08,563 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:01:08,563 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:01:08,563 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:01:08,563 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:01:08,563 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:01:08,563 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:01:08,563 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:01:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2019-11-06 22:01:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:01:08,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:08,597 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:08,599 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1302944760, now seen corresponding path program 1 times [2019-11-06 22:01:08,614 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:08,614 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160729474] [2019-11-06 22:01:08,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,299 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:09,367 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160729474] [2019-11-06 22:01:09,368 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:09,369 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:01:09,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292591480] [2019-11-06 22:01:09,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:01:09,375 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:09,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:01:09,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:01:09,393 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2019-11-06 22:01:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:10,723 INFO L93 Difference]: Finished difference Result 357 states and 465 transitions. [2019-11-06 22:01:10,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:01:10,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:01:10,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:10,741 INFO L225 Difference]: With dead ends: 357 [2019-11-06 22:01:10,742 INFO L226 Difference]: Without dead ends: 192 [2019-11-06 22:01:10,747 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:01:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2019-11-06 22:01:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 156. [2019-11-06 22:01:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-06 22:01:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2019-11-06 22:01:10,865 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 52 [2019-11-06 22:01:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:10,866 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2019-11-06 22:01:10,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:01:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2019-11-06 22:01:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:01:10,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:10,880 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:10,880 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:10,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash -279757305, now seen corresponding path program 1 times [2019-11-06 22:01:10,882 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:10,900 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090145562] [2019-11-06 22:01:10,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,244 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:11,285 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090145562] [2019-11-06 22:01:11,285 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:11,286 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:01:11,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713822874] [2019-11-06 22:01:11,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:01:11,288 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:11,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:01:11,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:01:11,289 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand 4 states. [2019-11-06 22:01:11,716 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:12,771 INFO L93 Difference]: Finished difference Result 290 states and 356 transitions. [2019-11-06 22:01:12,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:01:12,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-06 22:01:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:12,775 INFO L225 Difference]: With dead ends: 290 [2019-11-06 22:01:12,776 INFO L226 Difference]: Without dead ends: 176 [2019-11-06 22:01:12,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:01:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-11-06 22:01:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 147. [2019-11-06 22:01:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-06 22:01:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2019-11-06 22:01:12,821 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 53 [2019-11-06 22:01:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:12,822 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2019-11-06 22:01:12,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:01:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2019-11-06 22:01:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:01:12,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:12,824 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:12,824 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:12,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:12,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1451505581, now seen corresponding path program 1 times [2019-11-06 22:01:12,825 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:12,825 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827862828] [2019-11-06 22:01:12,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,190 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:13,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827862828] [2019-11-06 22:01:13,297 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:13,297 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:01:13,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295981001] [2019-11-06 22:01:13,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:13,298 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:13,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:13,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:01:13,299 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 8 states. [2019-11-06 22:01:13,806 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:14,122 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:14,399 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:14,671 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:16,381 INFO L93 Difference]: Finished difference Result 299 states and 370 transitions. [2019-11-06 22:01:16,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:01:16,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-11-06 22:01:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:16,386 INFO L225 Difference]: With dead ends: 299 [2019-11-06 22:01:16,386 INFO L226 Difference]: Without dead ends: 176 [2019-11-06 22:01:16,387 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:01:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-11-06 22:01:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 147. [2019-11-06 22:01:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-06 22:01:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2019-11-06 22:01:16,427 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 57 [2019-11-06 22:01:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:16,428 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2019-11-06 22:01:16,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2019-11-06 22:01:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-06 22:01:16,429 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:16,429 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:16,430 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2075034732, now seen corresponding path program 1 times [2019-11-06 22:01:16,431 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:16,431 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348209432] [2019-11-06 22:01:16,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,716 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:16,800 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348209432] [2019-11-06 22:01:16,800 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:16,800 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:01:16,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607580188] [2019-11-06 22:01:16,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:01:16,801 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:16,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:01:16,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:01:16,802 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand 6 states. [2019-11-06 22:01:17,191 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:18,529 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:19,581 INFO L93 Difference]: Finished difference Result 414 states and 512 transitions. [2019-11-06 22:01:19,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:01:19,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-11-06 22:01:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:19,586 INFO L225 Difference]: With dead ends: 414 [2019-11-06 22:01:19,586 INFO L226 Difference]: Without dead ends: 291 [2019-11-06 22:01:19,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:01:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-11-06 22:01:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 250. [2019-11-06 22:01:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-11-06 22:01:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 285 transitions. [2019-11-06 22:01:19,638 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 285 transitions. Word has length 75 [2019-11-06 22:01:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:19,638 INFO L462 AbstractCegarLoop]: Abstraction has 250 states and 285 transitions. [2019-11-06 22:01:19,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:01:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 285 transitions. [2019-11-06 22:01:19,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:01:19,640 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:19,640 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:19,641 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:19,641 INFO L82 PathProgramCache]: Analyzing trace with hash -466354007, now seen corresponding path program 1 times [2019-11-06 22:01:19,641 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:19,642 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056730612] [2019-11-06 22:01:19,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,966 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:20,090 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056730612] [2019-11-06 22:01:20,091 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:20,091 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:01:20,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760649313] [2019-11-06 22:01:20,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:20,092 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:20,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:20,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:01:20,092 INFO L87 Difference]: Start difference. First operand 250 states and 285 transitions. Second operand 8 states. [2019-11-06 22:01:20,651 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:22,444 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:22,730 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:23,008 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:23,267 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:24,174 INFO L93 Difference]: Finished difference Result 656 states and 809 transitions. [2019-11-06 22:01:24,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:01:24,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-11-06 22:01:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:24,179 INFO L225 Difference]: With dead ends: 656 [2019-11-06 22:01:24,179 INFO L226 Difference]: Without dead ends: 430 [2019-11-06 22:01:24,180 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:01:24,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2019-11-06 22:01:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 390. [2019-11-06 22:01:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2019-11-06 22:01:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 452 transitions. [2019-11-06 22:01:24,252 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 452 transitions. Word has length 89 [2019-11-06 22:01:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:24,253 INFO L462 AbstractCegarLoop]: Abstraction has 390 states and 452 transitions. [2019-11-06 22:01:24,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 452 transitions. [2019-11-06 22:01:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 22:01:24,255 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:24,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:24,255 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:24,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1062079729, now seen corresponding path program 1 times [2019-11-06 22:01:24,256 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:24,256 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182005013] [2019-11-06 22:01:24,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,554 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:24,673 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182005013] [2019-11-06 22:01:24,674 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:24,674 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:01:24,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562057203] [2019-11-06 22:01:24,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:01:24,675 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:24,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:01:24,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:01:24,676 INFO L87 Difference]: Start difference. First operand 390 states and 452 transitions. Second operand 10 states. [2019-11-06 22:01:25,153 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:26,962 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:27,297 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:27,559 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:27,815 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:28,150 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:29,647 INFO L93 Difference]: Finished difference Result 895 states and 1121 transitions. [2019-11-06 22:01:29,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:01:29,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2019-11-06 22:01:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:29,654 INFO L225 Difference]: With dead ends: 895 [2019-11-06 22:01:29,654 INFO L226 Difference]: Without dead ends: 658 [2019-11-06 22:01:29,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:01:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-11-06 22:01:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 590. [2019-11-06 22:01:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-11-06 22:01:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 695 transitions. [2019-11-06 22:01:29,768 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 695 transitions. Word has length 93 [2019-11-06 22:01:29,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:29,769 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 695 transitions. [2019-11-06 22:01:29,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:01:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 695 transitions. [2019-11-06 22:01:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 22:01:29,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:29,771 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:29,772 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:29,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:29,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1297227280, now seen corresponding path program 1 times [2019-11-06 22:01:29,772 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:29,773 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459865326] [2019-11-06 22:01:29,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,022 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:30,122 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459865326] [2019-11-06 22:01:30,122 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:30,122 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:01:30,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191348161] [2019-11-06 22:01:30,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:30,123 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:30,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:30,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:01:30,124 INFO L87 Difference]: Start difference. First operand 590 states and 695 transitions. Second operand 8 states. [2019-11-06 22:01:31,239 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:31,495 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:31,768 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:33,246 INFO L93 Difference]: Finished difference Result 1087 states and 1326 transitions. [2019-11-06 22:01:33,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:01:33,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-11-06 22:01:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:33,251 INFO L225 Difference]: With dead ends: 1087 [2019-11-06 22:01:33,251 INFO L226 Difference]: Without dead ends: 646 [2019-11-06 22:01:33,254 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:01:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2019-11-06 22:01:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 590. [2019-11-06 22:01:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-11-06 22:01:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 694 transitions. [2019-11-06 22:01:33,388 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 694 transitions. Word has length 93 [2019-11-06 22:01:33,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:33,388 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 694 transitions. [2019-11-06 22:01:33,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 694 transitions. [2019-11-06 22:01:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 22:01:33,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:33,393 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:33,393 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:33,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:33,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1956758802, now seen corresponding path program 1 times [2019-11-06 22:01:33,393 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:33,394 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108967541] [2019-11-06 22:01:33,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,678 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:33,828 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108967541] [2019-11-06 22:01:33,829 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:33,829 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:01:33,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188245867] [2019-11-06 22:01:33,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:01:33,835 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:33,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:01:33,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:01:33,837 INFO L87 Difference]: Start difference. First operand 590 states and 694 transitions. Second operand 12 states. [2019-11-06 22:01:34,542 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:34,813 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:35,092 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:35,921 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:36,194 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:01:36,488 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:36,739 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:38,304 INFO L93 Difference]: Finished difference Result 1223 states and 1502 transitions. [2019-11-06 22:01:38,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:01:38,304 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2019-11-06 22:01:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:38,309 INFO L225 Difference]: With dead ends: 1223 [2019-11-06 22:01:38,309 INFO L226 Difference]: Without dead ends: 657 [2019-11-06 22:01:38,312 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:01:38,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-11-06 22:01:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 597. [2019-11-06 22:01:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2019-11-06 22:01:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 701 transitions. [2019-11-06 22:01:38,441 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 701 transitions. Word has length 93 [2019-11-06 22:01:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:38,442 INFO L462 AbstractCegarLoop]: Abstraction has 597 states and 701 transitions. [2019-11-06 22:01:38,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:01:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 701 transitions. [2019-11-06 22:01:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-06 22:01:38,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:38,448 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:38,448 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:38,448 INFO L82 PathProgramCache]: Analyzing trace with hash -2046113513, now seen corresponding path program 1 times [2019-11-06 22:01:38,449 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:38,449 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359937298] [2019-11-06 22:01:38,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,824 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:01:39,186 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359937298] [2019-11-06 22:01:39,186 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004417880] [2019-11-06 22:01:39,187 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 [2019-11-06 22:01:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:39,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-06 22:01:39,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:01:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:39,606 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:01:39,607 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-11-06 22:01:39,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851515999] [2019-11-06 22:01:39,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:39,608 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:39,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:39,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:01:39,609 INFO L87 Difference]: Start difference. First operand 597 states and 701 transitions. Second operand 8 states. [2019-11-06 22:01:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:40,276 INFO L93 Difference]: Finished difference Result 1728 states and 2073 transitions. [2019-11-06 22:01:40,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:01:40,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-11-06 22:01:40,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:40,283 INFO L225 Difference]: With dead ends: 1728 [2019-11-06 22:01:40,283 INFO L226 Difference]: Without dead ends: 1155 [2019-11-06 22:01:40,286 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:01:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-11-06 22:01:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1152. [2019-11-06 22:01:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2019-11-06 22:01:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1356 transitions. [2019-11-06 22:01:40,489 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1356 transitions. Word has length 105 [2019-11-06 22:01:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:40,492 INFO L462 AbstractCegarLoop]: Abstraction has 1152 states and 1356 transitions. [2019-11-06 22:01:40,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1356 transitions. [2019-11-06 22:01:40,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 22:01:40,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:40,495 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:40,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:01:40,701 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:40,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1643042107, now seen corresponding path program 1 times [2019-11-06 22:01:40,702 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:40,703 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25292152] [2019-11-06 22:01:40,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,054 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:01:41,224 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25292152] [2019-11-06 22:01:41,225 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:41,225 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-06 22:01:41,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117818828] [2019-11-06 22:01:41,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-06 22:01:41,226 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:41,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 22:01:41,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:01:41,226 INFO L87 Difference]: Start difference. First operand 1152 states and 1356 transitions. Second operand 14 states. [2019-11-06 22:01:42,127 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:42,403 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:42,674 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:43,330 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186