/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:54:39,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:54:39,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:54:39,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:54:39,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:54:39,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:54:39,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:54:39,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:54:39,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:54:39,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:54:39,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:54:39,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:54:39,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:54:39,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:54:39,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:54:39,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:54:39,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:54:39,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:54:39,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:54:39,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:54:39,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:54:39,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:54:39,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:54:39,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:54:39,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:54:39,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:54:39,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:54:39,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:54:39,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:54:39,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:54:39,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:54:39,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:54:39,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:54:39,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:54:39,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:54:39,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:54:39,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:54:39,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:54:39,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:54:39,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:54:39,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:54:39,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:54:39,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:54:39,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:54:39,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:54:39,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:54:39,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:54:39,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:54:39,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:54:39,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:54:39,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:54:39,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:54:39,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:54:39,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:54:39,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:54:39,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:54:39,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:54:39,231 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:54:39,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:54:39,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:54:39,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:54:39,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:54:39,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:54:39,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:54:39,232 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:54:39,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:54:39,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:54:39,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:54:39,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:54:39,541 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:54:39,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-22 17:54:39,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc571312d/f6ac14c7efab4adda2034abb4079db1c/FLAG4681ffd3d [2020-08-22 17:54:40,134 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:54:40,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-22 17:54:40,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc571312d/f6ac14c7efab4adda2034abb4079db1c/FLAG4681ffd3d [2020-08-22 17:54:40,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc571312d/f6ac14c7efab4adda2034abb4079db1c [2020-08-22 17:54:40,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:54:40,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:54:40,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:40,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:54:40,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:54:40,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:40" (1/1) ... [2020-08-22 17:54:40,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5bb708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:40, skipping insertion in model container [2020-08-22 17:54:40,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:40" (1/1) ... [2020-08-22 17:54:40,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:54:40,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:54:40,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:40,838 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:54:41,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:41,092 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:54:41,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41 WrapperNode [2020-08-22 17:54:41,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:41,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:54:41,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:54:41,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:54:41,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (1/1) ... [2020-08-22 17:54:41,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (1/1) ... [2020-08-22 17:54:41,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (1/1) ... [2020-08-22 17:54:41,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (1/1) ... [2020-08-22 17:54:41,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (1/1) ... [2020-08-22 17:54:41,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (1/1) ... [2020-08-22 17:54:41,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (1/1) ... [2020-08-22 17:54:41,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:54:41,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:54:41,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:54:41,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:54:41,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (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 [2020-08-22 17:54:41,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:54:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:54:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:54:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:54:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:54:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:54:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:54:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:54:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:54:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:54:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 17:54:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:54:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:54:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:54:41,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:54:41,262 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:54:41,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:54:41,262 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 17:54:41,262 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 17:54:41,262 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:54:41,263 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:54:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:54:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:54:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:54:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:54:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:54:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:54:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:54:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:54:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:54:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:54:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:54:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:54:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:54:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:54:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:54:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:54:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:54:41,268 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:54:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:54:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:54:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:54:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:54:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:54:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:54:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:54:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:54:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:54:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:54:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:54:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:54:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:54:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:54:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:54:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 17:54:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 17:54:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:54:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:54:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:54:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:54:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:54:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:54:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:54:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:54:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:54:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:54:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:54:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:54:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:54:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:54:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 17:54:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:54:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:54:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:54:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:54:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:54:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:54:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:54:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:54:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:54:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:54:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:54:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:54:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:54:42,381 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:54:42,381 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:54:42,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:42 BoogieIcfgContainer [2020-08-22 17:54:42,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:54:42,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:54:42,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:54:42,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:54:42,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:54:40" (1/3) ... [2020-08-22 17:54:42,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3328f575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:42, skipping insertion in model container [2020-08-22 17:54:42,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:41" (2/3) ... [2020-08-22 17:54:42,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3328f575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:42, skipping insertion in model container [2020-08-22 17:54:42,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:42" (3/3) ... [2020-08-22 17:54:42,396 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-08-22 17:54:42,406 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:54:42,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:54:42,429 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:54:42,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:54:42,453 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:54:42,453 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:54:42,453 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:54:42,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:54:42,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:54:42,454 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:54:42,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:54:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-08-22 17:54:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 17:54:42,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:42,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:42,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:42,508 INFO L82 PathProgramCache]: Analyzing trace with hash -382402386, now seen corresponding path program 1 times [2020-08-22 17:54:42,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:42,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304543827] [2020-08-22 17:54:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:42,601 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,265 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:54:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:43,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304543827] [2020-08-22 17:54:43,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:43,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 17:54:43,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224886354] [2020-08-22 17:54:43,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 17:54:43,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:43,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 17:54:43,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:54:43,461 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 3 states. [2020-08-22 17:54:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:44,928 INFO L93 Difference]: Finished difference Result 484 states and 574 transitions. [2020-08-22 17:54:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 17:54:44,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 17:54:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:44,948 INFO L225 Difference]: With dead ends: 484 [2020-08-22 17:54:44,948 INFO L226 Difference]: Without dead ends: 301 [2020-08-22 17:54:44,954 INFO L675 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 [2020-08-22 17:54:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-08-22 17:54:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 257. [2020-08-22 17:54:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-22 17:54:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 278 transitions. [2020-08-22 17:54:45,091 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 278 transitions. Word has length 142 [2020-08-22 17:54:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:45,092 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 278 transitions. [2020-08-22 17:54:45,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 17:54:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 278 transitions. [2020-08-22 17:54:45,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 17:54:45,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:45,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:45,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:54:45,098 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:45,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:45,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1833447387, now seen corresponding path program 1 times [2020-08-22 17:54:45,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:45,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297126078] [2020-08-22 17:54:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:45,102 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,528 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:54:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:45,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297126078] [2020-08-22 17:54:45,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:45,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:54:45,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040993538] [2020-08-22 17:54:45,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:54:45,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:45,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:54:45,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:54:45,604 INFO L87 Difference]: Start difference. First operand 257 states and 278 transitions. Second operand 4 states. [2020-08-22 17:54:46,203 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:47,146 INFO L93 Difference]: Finished difference Result 388 states and 435 transitions. [2020-08-22 17:54:47,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:54:47,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 17:54:47,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:47,155 INFO L225 Difference]: With dead ends: 388 [2020-08-22 17:54:47,155 INFO L226 Difference]: Without dead ends: 284 [2020-08-22 17:54:47,157 INFO L675 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 [2020-08-22 17:54:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-22 17:54:47,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 247. [2020-08-22 17:54:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-22 17:54:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 265 transitions. [2020-08-22 17:54:47,249 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 265 transitions. Word has length 143 [2020-08-22 17:54:47,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:47,250 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 265 transitions. [2020-08-22 17:54:47,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:54:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 265 transitions. [2020-08-22 17:54:47,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 17:54:47,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:47,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:47,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:54:47,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:47,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:47,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1272206935, now seen corresponding path program 1 times [2020-08-22 17:54:47,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:47,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338317851] [2020-08-22 17:54:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:47,258 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,559 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:47,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:54:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:54:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:47,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338317851] [2020-08-22 17:54:47,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:47,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:54:47,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029598897] [2020-08-22 17:54:47,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:54:47,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:47,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:54:47,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:54:47,725 INFO L87 Difference]: Start difference. First operand 247 states and 265 transitions. Second operand 10 states. [2020-08-22 17:54:48,330 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:48,709 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:49,001 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:54:49,257 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:49,518 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:49,773 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:50,712 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:52,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:52,971 INFO L93 Difference]: Finished difference Result 676 states and 783 transitions. [2020-08-22 17:54:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:54:52,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-22 17:54:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:52,977 INFO L225 Difference]: With dead ends: 676 [2020-08-22 17:54:52,977 INFO L226 Difference]: Without dead ends: 539 [2020-08-22 17:54:52,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-08-22 17:54:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-08-22 17:54:53,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 432. [2020-08-22 17:54:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-08-22 17:54:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 478 transitions. [2020-08-22 17:54:53,133 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 478 transitions. Word has length 156 [2020-08-22 17:54:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:53,134 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 478 transitions. [2020-08-22 17:54:53,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:54:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 478 transitions. [2020-08-22 17:54:53,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 17:54:53,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:53,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:53,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:54:53,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:53,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1170641190, now seen corresponding path program 1 times [2020-08-22 17:54:53,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:53,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397936933] [2020-08-22 17:54:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:53,141 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,507 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 17:54:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:54:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:54:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:53,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397936933] [2020-08-22 17:54:53,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:53,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:54:53,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484302400] [2020-08-22 17:54:53,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:54:53,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:53,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:54:53,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:54:53,740 INFO L87 Difference]: Start difference. First operand 432 states and 478 transitions. Second operand 9 states. [2020-08-22 17:54:54,403 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:55,738 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:56,009 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:56,325 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:56,597 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:56,848 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:57,077 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:57,321 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:57,728 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:58,988 INFO L93 Difference]: Finished difference Result 1194 states and 1418 transitions. [2020-08-22 17:54:58,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:54:58,995 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-08-22 17:54:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:59,010 INFO L225 Difference]: With dead ends: 1194 [2020-08-22 17:54:59,010 INFO L226 Difference]: Without dead ends: 872 [2020-08-22 17:54:59,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-08-22 17:54:59,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-08-22 17:54:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 715. [2020-08-22 17:54:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-08-22 17:54:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 802 transitions. [2020-08-22 17:54:59,313 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 802 transitions. Word has length 161 [2020-08-22 17:54:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:59,313 INFO L479 AbstractCegarLoop]: Abstraction has 715 states and 802 transitions. [2020-08-22 17:54:59,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:54:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 802 transitions. [2020-08-22 17:54:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 17:54:59,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:59,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:59,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:54:59,317 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:59,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:59,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1400803721, now seen corresponding path program 1 times [2020-08-22 17:54:59,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:59,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546869439] [2020-08-22 17:54:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:59,321 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,608 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:54:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:54:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 17:54:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:59,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546869439] [2020-08-22 17:54:59,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:59,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:54:59,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082515980] [2020-08-22 17:54:59,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:54:59,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:59,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:54:59,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:54:59,806 INFO L87 Difference]: Start difference. First operand 715 states and 802 transitions. Second operand 10 states. [2020-08-22 17:55:00,283 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:01,666 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:01,920 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:02,195 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:02,483 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:02,742 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:03,439 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:03,666 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:03,971 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:04,908 INFO L93 Difference]: Finished difference Result 1863 states and 2253 transitions. [2020-08-22 17:55:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 17:55:04,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-08-22 17:55:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:04,916 INFO L225 Difference]: With dead ends: 1863 [2020-08-22 17:55:04,917 INFO L226 Difference]: Without dead ends: 1258 [2020-08-22 17:55:04,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-08-22 17:55:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-08-22 17:55:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1013. [2020-08-22 17:55:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-08-22 17:55:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1157 transitions. [2020-08-22 17:55:05,282 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1157 transitions. Word has length 166 [2020-08-22 17:55:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:05,282 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1157 transitions. [2020-08-22 17:55:05,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1157 transitions. [2020-08-22 17:55:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-22 17:55:05,292 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:05,292 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:05,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:55:05,292 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:05,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:05,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1314188149, now seen corresponding path program 1 times [2020-08-22 17:55:05,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:05,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198620673] [2020-08-22 17:55:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:05,299 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,587 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:55:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:55:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-22 17:55:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 17:55:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:05,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198620673] [2020-08-22 17:55:05,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:05,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:55:05,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227200357] [2020-08-22 17:55:05,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:55:05,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:05,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:55:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:55:05,792 INFO L87 Difference]: Start difference. First operand 1013 states and 1157 transitions. Second operand 11 states. [2020-08-22 17:55:07,204 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:07,470 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:07,751 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:55:08,018 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:08,270 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:08,497 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:10,188 INFO L93 Difference]: Finished difference Result 2528 states and 3208 transitions. [2020-08-22 17:55:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:55:10,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2020-08-22 17:55:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:10,198 INFO L225 Difference]: With dead ends: 2528 [2020-08-22 17:55:10,199 INFO L226 Difference]: Without dead ends: 1625 [2020-08-22 17:55:10,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:55:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-08-22 17:55:10,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1051. [2020-08-22 17:55:10,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-08-22 17:55:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1195 transitions. [2020-08-22 17:55:10,551 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1195 transitions. Word has length 216 [2020-08-22 17:55:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:10,552 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1195 transitions. [2020-08-22 17:55:10,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:55:10,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1195 transitions. [2020-08-22 17:55:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-22 17:55:10,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:10,569 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:10,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:55:10,569 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:10,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:10,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1226108971, now seen corresponding path program 1 times [2020-08-22 17:55:10,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:10,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766490752] [2020-08-22 17:55:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:10,572 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,836 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:55:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:55:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-22 17:55:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 17:55:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:11,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766490752] [2020-08-22 17:55:11,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:11,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 17:55:11,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557265658] [2020-08-22 17:55:11,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 17:55:11,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:11,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 17:55:11,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-08-22 17:55:11,107 INFO L87 Difference]: Start difference. First operand 1051 states and 1195 transitions. Second operand 14 states. [2020-08-22 17:55:11,674 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:11,921 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:12,170 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:12,413 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:12,669 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:13,580 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:13,817 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:14,082 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:14,356 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:14,611 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:16,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:16,832 INFO L93 Difference]: Finished difference Result 2602 states and 3278 transitions. [2020-08-22 17:55:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 17:55:16,833 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 216 [2020-08-22 17:55:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:16,843 INFO L225 Difference]: With dead ends: 2602 [2020-08-22 17:55:16,843 INFO L226 Difference]: Without dead ends: 1661 [2020-08-22 17:55:16,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-08-22 17:55:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2020-08-22 17:55:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1075. [2020-08-22 17:55:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-08-22 17:55:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1219 transitions. [2020-08-22 17:55:17,371 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1219 transitions. Word has length 216 [2020-08-22 17:55:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:17,372 INFO L479 AbstractCegarLoop]: Abstraction has 1075 states and 1219 transitions. [2020-08-22 17:55:17,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 17:55:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1219 transitions. [2020-08-22 17:55:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-22 17:55:17,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:17,378 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:17,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:55:17,378 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:17,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1898830414, now seen corresponding path program 1 times [2020-08-22 17:55:17,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:17,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089119141] [2020-08-22 17:55:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:17,383 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,691 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:17,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:55:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:55:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-22 17:55:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 17:55:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:17,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089119141] [2020-08-22 17:55:17,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:17,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 17:55:17,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933409712] [2020-08-22 17:55:17,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 17:55:17,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:17,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 17:55:17,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 17:55:17,890 INFO L87 Difference]: Start difference. First operand 1075 states and 1219 transitions. Second operand 8 states. [2020-08-22 17:55:18,326 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:18,967 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:23,214 INFO L93 Difference]: Finished difference Result 4079 states and 5184 transitions. [2020-08-22 17:55:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 17:55:23,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-08-22 17:55:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:23,234 INFO L225 Difference]: With dead ends: 4079 [2020-08-22 17:55:23,234 INFO L226 Difference]: Without dead ends: 3114 [2020-08-22 17:55:23,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-08-22 17:55:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2020-08-22 17:55:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 2215. [2020-08-22 17:55:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-08-22 17:55:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2547 transitions. [2020-08-22 17:55:23,895 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2547 transitions. Word has length 216 [2020-08-22 17:55:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:23,896 INFO L479 AbstractCegarLoop]: Abstraction has 2215 states and 2547 transitions. [2020-08-22 17:55:23,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 17:55:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2547 transitions. [2020-08-22 17:55:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-08-22 17:55:23,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:23,902 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:23,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:55:23,902 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:23,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:23,903 INFO L82 PathProgramCache]: Analyzing trace with hash 182911630, now seen corresponding path program 1 times [2020-08-22 17:55:23,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:23,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620359455] [2020-08-22 17:55:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:23,906 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,169 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 17:55:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:55:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:55:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:55:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 17:55:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:55:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:24,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620359455] [2020-08-22 17:55:24,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:24,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-08-22 17:55:24,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048860044] [2020-08-22 17:55:24,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 17:55:24,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:24,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 17:55:24,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:55:24,758 INFO L87 Difference]: Start difference. First operand 2215 states and 2547 transitions. Second operand 21 states. [2020-08-22 17:55:25,275 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:25,638 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:25,913 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:55:26,163 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:26,408 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:26,659 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:27,563 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:28,531 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:28,861 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:29,295 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:29,599 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:31,383 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:31,786 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:32,055 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:32,332 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:32,656 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:32,978 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:33,273 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:33,561 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:34,116 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 17:55:34,743 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-08-22 17:55:35,241 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 17:55:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:38,693 INFO L93 Difference]: Finished difference Result 5125 states and 6243 transitions. [2020-08-22 17:55:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-22 17:55:38,700 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 221 [2020-08-22 17:55:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:38,717 INFO L225 Difference]: With dead ends: 5125 [2020-08-22 17:55:38,717 INFO L226 Difference]: Without dead ends: 3020 [2020-08-22 17:55:38,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=830, Invalid=3592, Unknown=0, NotChecked=0, Total=4422 [2020-08-22 17:55:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2020-08-22 17:55:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2135. [2020-08-22 17:55:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-08-22 17:55:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 2421 transitions. [2020-08-22 17:55:39,706 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 2421 transitions. Word has length 221 [2020-08-22 17:55:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:39,707 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 2421 transitions. [2020-08-22 17:55:39,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 17:55:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 2421 transitions. [2020-08-22 17:55:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-08-22 17:55:39,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:39,714 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:39,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:55:39,715 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:39,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:39,715 INFO L82 PathProgramCache]: Analyzing trace with hash -643898563, now seen corresponding path program 1 times [2020-08-22 17:55:39,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:39,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584209846] [2020-08-22 17:55:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:39,782 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:55:39,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:55:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:55:39,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:55:40,214 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:55:40,214 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:55:40,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:55:40,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:55:40 BoogieIcfgContainer [2020-08-22 17:55:40,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:55:40,246 INFO L168 Benchmark]: Toolchain (without parser) took 59789.95 ms. Allocated memory was 140.5 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 103.0 MB in the beginning and 195.4 MB in the end (delta: -92.4 MB). Peak memory consumption was 963.5 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:40,247 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 17:55:40,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.03 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 103.0 MB in the beginning and 173.4 MB in the end (delta: -70.3 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:40,248 INFO L168 Benchmark]: Boogie Preprocessor took 101.72 ms. Allocated memory is still 205.5 MB. Free memory was 173.4 MB in the beginning and 169.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:40,249 INFO L168 Benchmark]: RCFGBuilder took 1191.69 ms. Allocated memory was 205.5 MB in the beginning and 236.5 MB in the end (delta: 30.9 MB). Free memory was 169.2 MB in the beginning and 175.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:40,250 INFO L168 Benchmark]: TraceAbstraction took 57855.74 ms. Allocated memory was 236.5 MB in the beginning and 1.2 GB in the end (delta: 960.0 MB). Free memory was 173.9 MB in the beginning and 195.4 MB in the end (delta: -21.5 MB). Peak memory consumption was 938.5 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:40,253 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 636.03 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 103.0 MB in the beginning and 173.4 MB in the end (delta: -70.3 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.72 ms. Allocated memory is still 205.5 MB. Free memory was 173.4 MB in the beginning and 169.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1191.69 ms. Allocated memory was 205.5 MB in the beginning and 236.5 MB in the end (delta: 30.9 MB). Free memory was 169.2 MB in the beginning and 175.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 57855.74 ms. Allocated memory was 236.5 MB in the beginning and 1.2 GB in the end (delta: 960.0 MB). Free memory was 173.9 MB in the beginning and 195.4 MB in the end (delta: -21.5 MB). Peak memory consumption was 938.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; [L924] int retValue_acc ; [L925] int tmp ; [L929] FCALL select_helpers() [L930] FCALL select_features() [L931] CALL, EXPR valid_product() [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); [L931] RET, EXPR valid_product() [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) [L935] FCALL setup() [L936] CALL runTest() [L918] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) [L443] CALL waterRise() [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 [L443] RET waterRise() [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L463] CALL startSystem() [L687] systemActive = 1 [L463] RET startSystem() [L478] CALL timeShift() [L506] COND FALSE !(\read(pumpRunning)) [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND TRUE ! pumpRunning [L540] CALL, EXPR isHighWaterLevel() [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; [L656] CALL, EXPR isHighWaterSensorDry() [L773] int retValue_acc ; [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); [L656] RET, EXPR isHighWaterSensorDry() [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); [L540] RET, EXPR isHighWaterLevel() [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) [L544] CALL activatePump() [L569] int tmp ; [L573] CALL, EXPR isMethaneAlarm() [L594] int retValue_acc ; [L598] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L598] RET, EXPR isMethaneLevelCritical() [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); [L573] RET, EXPR isMethaneAlarm() [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) [L579] CALL activatePump__wrappee__highWaterSensor() [L563] pumpRunning = 1 [L579] RET activatePump__wrappee__highWaterSensor() [L544] RET activatePump() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) [L521] RET __utac_acc__Specification1_spec__1() [L478] RET timeShift() [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) [L453] CALL changeMethaneLevel() [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 [L453] RET changeMethaneLevel() [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L463] CALL startSystem() [L687] systemActive = 1 [L463] RET startSystem() [L478] CALL timeShift() [L506] COND TRUE \read(pumpRunning) [L508] CALL lowerWaterLevel() [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 [L508] RET lowerWaterLevel() [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND FALSE !(! pumpRunning) [L553] FCALL processEnvironment__wrappee__base() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) [L797] CALL, EXPR isPumpRunning() [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); [L797] RET, EXPR isPumpRunning() [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) [L801] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 57.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 48.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2331 SDtfs, 6221 SDslu, 6152 SDs, 0 SdLazy, 13527 SolverSat, 2222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2215occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 3534 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...