/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_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:24:48,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:24:48,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:24:48,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:24:48,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:24:48,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:24:48,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:24:48,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:24:48,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:24:48,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:24:48,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:24:48,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:24:48,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:24:48,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:24:48,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:24:48,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:24:48,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:24:48,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:24:48,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:24:48,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:24:48,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:24:48,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:24:48,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:24:48,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:24:48,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:24:48,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:24:48,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:24:48,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:24:48,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:24:48,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:24:48,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:24:48,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:24:48,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:24:48,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:24:48,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:24:48,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:24:48,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:24:48,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:24:48,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:24:48,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:24:48,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:24:48,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:24:48,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:24:48,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:24:48,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:24:48,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:24:48,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:24:48,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:24:48,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:24:48,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:24:48,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:24:48,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:24:48,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:24:48,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:24:48,280 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:24:48,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:24:48,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:24:48,281 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:24:48,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:24:48,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:24:48,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:24:48,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:24:48,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:24:48,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:24:48,282 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:24:48,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:24:48,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:24:48,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:24:48,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:24:48,572 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:24:48,573 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-07-07 12:24:48,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdbea2cf1/380c2ddf8f684e5aac21e62f01988728/FLAGcee42f475 [2020-07-07 12:24:49,151 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:24:49,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-07-07 12:24:49,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdbea2cf1/380c2ddf8f684e5aac21e62f01988728/FLAGcee42f475 [2020-07-07 12:24:49,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdbea2cf1/380c2ddf8f684e5aac21e62f01988728 [2020-07-07 12:24:49,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:24:49,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:24:49,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:24:49,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:24:49,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:24:49,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:24:49" (1/1) ... [2020-07-07 12:24:49,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d68d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:49, skipping insertion in model container [2020-07-07 12:24:49,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:24:49" (1/1) ... [2020-07-07 12:24:49,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:24:49,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:24:50,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:24:50,055 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:24:50,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:24:50,180 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:24:50,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50 WrapperNode [2020-07-07 12:24:50,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:24:50,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:24:50,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:24:50,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:24:50,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (1/1) ... [2020-07-07 12:24:50,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (1/1) ... [2020-07-07 12:24:50,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (1/1) ... [2020-07-07 12:24:50,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (1/1) ... [2020-07-07 12:24:50,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (1/1) ... [2020-07-07 12:24:50,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (1/1) ... [2020-07-07 12:24:50,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (1/1) ... [2020-07-07 12:24:50,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:24:50,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:24:50,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:24:50,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:24:50,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (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 [2020-07-07 12:24:50,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:24:50,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:24:50,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:24:50,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:24:50,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:24:50,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:24:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:24:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:24:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:24:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:24:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:24:50,385 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:24:50,385 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:24:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:24:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:24:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:24:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:24:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:24:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:24:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:24:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:24:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:24:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:24:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:24:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:24:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:24:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:24:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:24:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:24:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:24:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:24:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:24:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:24:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:24:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:24:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:24:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:24:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:24:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:24:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:24:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:24:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:24:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:24:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:24:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:24:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:24:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:24:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:24:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:24:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:24:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:24:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:24:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:24:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:24:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:24:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:24:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:24:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:24:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:24:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:24:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:24:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:24:51,461 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:24:51,461 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:24:51,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:24:51 BoogieIcfgContainer [2020-07-07 12:24:51,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:24:51,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:24:51,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:24:51,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:24:51,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:24:49" (1/3) ... [2020-07-07 12:24:51,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bfa607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:24:51, skipping insertion in model container [2020-07-07 12:24:51,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:50" (2/3) ... [2020-07-07 12:24:51,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bfa607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:24:51, skipping insertion in model container [2020-07-07 12:24:51,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:24:51" (3/3) ... [2020-07-07 12:24:51,475 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-07-07 12:24:51,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:24:51,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:24:51,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:24:51,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:24:51,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:24:51,531 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:24:51,531 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:24:51,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:24:51,532 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:24:51,532 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:24:51,532 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:24:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-07-07 12:24:51,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:24:51,571 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:24:51,572 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] [2020-07-07 12:24:51,573 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:24:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:24:51,579 INFO L82 PathProgramCache]: Analyzing trace with hash -955195086, now seen corresponding path program 1 times [2020-07-07 12:24:51,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:24:51,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637705724] [2020-07-07 12:24:51,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:24:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:52,265 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:24:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:24:52,511 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:24:52,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637705724] [2020-07-07 12:24:52,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:24:52,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:24:52,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607289571] [2020-07-07 12:24:52,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:24:52,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:24:52,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:24:52,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:24:52,546 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2020-07-07 12:24:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:24:53,702 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2020-07-07 12:24:53,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:24:53,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:24:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:24:53,734 INFO L225 Difference]: With dead ends: 419 [2020-07-07 12:24:53,735 INFO L226 Difference]: Without dead ends: 266 [2020-07-07 12:24:53,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:24:53,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-07-07 12:24:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-07-07 12:24:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-07 12:24:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2020-07-07 12:24:53,885 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 142 [2020-07-07 12:24:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:24:53,886 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2020-07-07 12:24:53,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:24:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2020-07-07 12:24:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:24:53,890 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:24:53,891 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] [2020-07-07 12:24:53,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:24:53,891 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:24:53,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:24:53,892 INFO L82 PathProgramCache]: Analyzing trace with hash -853880488, now seen corresponding path program 1 times [2020-07-07 12:24:53,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:24:53,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125387341] [2020-07-07 12:24:53,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:24:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:54,243 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:24:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:24:54,355 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:24:54,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125387341] [2020-07-07 12:24:54,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:24:54,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:24:54,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384364810] [2020-07-07 12:24:54,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:24:54,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:24:54,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:24:54,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:24:54,359 INFO L87 Difference]: Start difference. First operand 227 states and 245 transitions. Second operand 4 states. [2020-07-07 12:24:54,944 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:24:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:24:55,603 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2020-07-07 12:24:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:24:55,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:24:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:24:55,607 INFO L225 Difference]: With dead ends: 336 [2020-07-07 12:24:55,608 INFO L226 Difference]: Without dead ends: 249 [2020-07-07 12:24:55,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:24:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-07-07 12:24:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-07-07 12:24:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-07-07 12:24:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 232 transitions. [2020-07-07 12:24:55,710 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 232 transitions. Word has length 143 [2020-07-07 12:24:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:24:55,711 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 232 transitions. [2020-07-07 12:24:55,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:24:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 232 transitions. [2020-07-07 12:24:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-07 12:24:55,713 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:24:55,714 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] [2020-07-07 12:24:55,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:24:55,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:24:55,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:24:55,715 INFO L82 PathProgramCache]: Analyzing trace with hash -2102825874, now seen corresponding path program 1 times [2020-07-07 12:24:55,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:24:55,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229014492] [2020-07-07 12:24:55,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:24:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,019 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:24:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:24:56,166 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:24:56,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229014492] [2020-07-07 12:24:56,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:24:56,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:24:56,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089350984] [2020-07-07 12:24:56,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:24:56,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:24:56,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:24:56,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:24:56,170 INFO L87 Difference]: Start difference. First operand 217 states and 232 transitions. Second operand 9 states. [2020-07-07 12:24:56,668 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:24:56,990 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:24:57,246 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:24:57,530 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:24:57,784 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:24:58,032 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:24:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:24:59,278 INFO L93 Difference]: Finished difference Result 356 states and 401 transitions. [2020-07-07 12:24:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 12:24:59,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-07-07 12:24:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:24:59,286 INFO L225 Difference]: With dead ends: 356 [2020-07-07 12:24:59,286 INFO L226 Difference]: Without dead ends: 249 [2020-07-07 12:24:59,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:24:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-07-07 12:24:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-07-07 12:24:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-07-07 12:24:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 231 transitions. [2020-07-07 12:24:59,368 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 231 transitions. Word has length 152 [2020-07-07 12:24:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:24:59,369 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 231 transitions. [2020-07-07 12:24:59,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:24:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 231 transitions. [2020-07-07 12:24:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-07 12:24:59,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:24:59,372 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] [2020-07-07 12:24:59,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:24:59,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:24:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:24:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1355593621, now seen corresponding path program 1 times [2020-07-07 12:24:59,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:24:59,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841988443] [2020-07-07 12:24:59,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:24:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,661 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:24:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:24:59,821 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:24:59,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841988443] [2020-07-07 12:24:59,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:24:59,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 12:24:59,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548756682] [2020-07-07 12:24:59,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 12:24:59,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:24:59,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 12:24:59,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 12:24:59,823 INFO L87 Difference]: Start difference. First operand 217 states and 231 transitions. Second operand 6 states. [2020-07-07 12:25:00,449 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:02,130 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:02,661 INFO L93 Difference]: Finished difference Result 478 states and 544 transitions. [2020-07-07 12:25:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 12:25:02,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-07-07 12:25:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:02,665 INFO L225 Difference]: With dead ends: 478 [2020-07-07 12:25:02,665 INFO L226 Difference]: Without dead ends: 371 [2020-07-07 12:25:02,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-07-07 12:25:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 312. [2020-07-07 12:25:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-07-07 12:25:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 336 transitions. [2020-07-07 12:25:02,817 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 336 transitions. Word has length 160 [2020-07-07 12:25:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:02,818 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 336 transitions. [2020-07-07 12:25:02,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 12:25:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 336 transitions. [2020-07-07 12:25:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-07-07 12:25:02,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:02,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:02,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:25:02,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:02,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2011013837, now seen corresponding path program 1 times [2020-07-07 12:25:02,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:02,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092779545] [2020-07-07 12:25:02,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,098 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:03,315 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:03,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092779545] [2020-07-07 12:25:03,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:03,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 12:25:03,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271726922] [2020-07-07 12:25:03,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 12:25:03,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 12:25:03,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-07-07 12:25:03,318 INFO L87 Difference]: Start difference. First operand 312 states and 336 transitions. Second operand 12 states. [2020-07-07 12:25:03,931 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:04,217 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:25:04,466 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:04,741 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:04,988 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:05,775 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:06,037 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:06,292 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:06,549 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:06,784 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:07,688 INFO L93 Difference]: Finished difference Result 578 states and 658 transitions. [2020-07-07 12:25:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 12:25:07,689 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 184 [2020-07-07 12:25:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:07,693 INFO L225 Difference]: With dead ends: 578 [2020-07-07 12:25:07,693 INFO L226 Difference]: Without dead ends: 376 [2020-07-07 12:25:07,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-07-07 12:25:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-07-07 12:25:07,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 318. [2020-07-07 12:25:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-07-07 12:25:07,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 342 transitions. [2020-07-07 12:25:07,792 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 342 transitions. Word has length 184 [2020-07-07 12:25:07,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:07,792 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 342 transitions. [2020-07-07 12:25:07,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 12:25:07,793 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 342 transitions. [2020-07-07 12:25:07,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-07-07 12:25:07,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:07,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:07,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:25:07,796 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:07,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:07,796 INFO L82 PathProgramCache]: Analyzing trace with hash 394324589, now seen corresponding path program 1 times [2020-07-07 12:25:07,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:07,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32937676] [2020-07-07 12:25:07,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,062 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:08,196 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:08,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32937676] [2020-07-07 12:25:08,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:08,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:08,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759892269] [2020-07-07 12:25:08,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:08,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:08,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:08,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:08,199 INFO L87 Difference]: Start difference. First operand 318 states and 342 transitions. Second operand 9 states. [2020-07-07 12:25:08,670 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:09,968 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:10,214 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:10,477 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:10,717 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:10,951 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:11,176 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:11,410 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:11,734 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:12,529 INFO L93 Difference]: Finished difference Result 788 states and 910 transitions. [2020-07-07 12:25:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:12,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2020-07-07 12:25:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:12,535 INFO L225 Difference]: With dead ends: 788 [2020-07-07 12:25:12,535 INFO L226 Difference]: Without dead ends: 580 [2020-07-07 12:25:12,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:25:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-07 12:25:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 489. [2020-07-07 12:25:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-07-07 12:25:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 532 transitions. [2020-07-07 12:25:12,689 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 532 transitions. Word has length 184 [2020-07-07 12:25:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:12,689 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 532 transitions. [2020-07-07 12:25:12,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:25:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 532 transitions. [2020-07-07 12:25:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-07 12:25:12,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:12,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:12,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:25:12,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:12,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:12,694 INFO L82 PathProgramCache]: Analyzing trace with hash 682865486, now seen corresponding path program 1 times [2020-07-07 12:25:12,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:12,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608408317] [2020-07-07 12:25:12,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,976 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:13,164 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:13,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608408317] [2020-07-07 12:25:13,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:13,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:13,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665547812] [2020-07-07 12:25:13,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:13,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:13,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:13,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:13,167 INFO L87 Difference]: Start difference. First operand 489 states and 532 transitions. Second operand 10 states. [2020-07-07 12:25:13,675 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:15,048 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:15,271 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:15,537 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:15,766 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:16,025 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:16,308 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:16,555 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:16,811 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:17,572 INFO L93 Difference]: Finished difference Result 646 states and 750 transitions. [2020-07-07 12:25:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:25:17,572 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 189 [2020-07-07 12:25:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:17,577 INFO L225 Difference]: With dead ends: 646 [2020-07-07 12:25:17,577 INFO L226 Difference]: Without dead ends: 643 [2020-07-07 12:25:17,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-07-07 12:25:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-07-07 12:25:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 489. [2020-07-07 12:25:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-07-07 12:25:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 531 transitions. [2020-07-07 12:25:17,763 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 531 transitions. Word has length 189 [2020-07-07 12:25:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:17,764 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 531 transitions. [2020-07-07 12:25:17,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 531 transitions. [2020-07-07 12:25:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-07-07 12:25:17,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:17,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:17,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:25:17,767 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:17,768 INFO L82 PathProgramCache]: Analyzing trace with hash 888496141, now seen corresponding path program 1 times [2020-07-07 12:25:17,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:17,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971485580] [2020-07-07 12:25:17,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,043 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:18,196 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:18,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971485580] [2020-07-07 12:25:18,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:18,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:18,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971663605] [2020-07-07 12:25:18,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:18,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:18,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:18,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:18,199 INFO L87 Difference]: Start difference. First operand 489 states and 531 transitions. Second operand 10 states. [2020-07-07 12:25:19,450 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:19,703 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:25:19,974 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:25:20,228 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:20,485 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:20,731 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:21,676 INFO L93 Difference]: Finished difference Result 1032 states and 1191 transitions. [2020-07-07 12:25:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:25:21,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-07-07 12:25:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:21,680 INFO L225 Difference]: With dead ends: 1032 [2020-07-07 12:25:21,681 INFO L226 Difference]: Without dead ends: 653 [2020-07-07 12:25:21,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-07-07 12:25:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-07-07 12:25:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 505. [2020-07-07 12:25:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-07-07 12:25:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 547 transitions. [2020-07-07 12:25:21,817 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 547 transitions. Word has length 190 [2020-07-07 12:25:21,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:21,818 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 547 transitions. [2020-07-07 12:25:21,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 547 transitions. [2020-07-07 12:25:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-07-07 12:25:21,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:21,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:21,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:25:21,822 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:21,822 INFO L82 PathProgramCache]: Analyzing trace with hash -325395952, now seen corresponding path program 1 times [2020-07-07 12:25:21,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:21,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106668442] [2020-07-07 12:25:21,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,070 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:22,216 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:22,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106668442] [2020-07-07 12:25:22,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:22,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 12:25:22,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116142268] [2020-07-07 12:25:22,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 12:25:22,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:22,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 12:25:22,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 12:25:22,218 INFO L87 Difference]: Start difference. First operand 505 states and 547 transitions. Second operand 7 states. [2020-07-07 12:25:22,697 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:23,249 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:25,205 INFO L93 Difference]: Finished difference Result 1471 states and 1751 transitions. [2020-07-07 12:25:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:25,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-07-07 12:25:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:25,214 INFO L225 Difference]: With dead ends: 1471 [2020-07-07 12:25:25,215 INFO L226 Difference]: Without dead ends: 1076 [2020-07-07 12:25:25,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:25:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-07-07 12:25:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 903. [2020-07-07 12:25:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-07-07 12:25:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1011 transitions. [2020-07-07 12:25:25,551 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1011 transitions. Word has length 190 [2020-07-07 12:25:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:25,552 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 1011 transitions. [2020-07-07 12:25:25,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 12:25:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1011 transitions. [2020-07-07 12:25:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 12:25:25,555 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:25,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:25,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:25:25,555 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:25,556 INFO L82 PathProgramCache]: Analyzing trace with hash -527704718, now seen corresponding path program 1 times [2020-07-07 12:25:25,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:25,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029856883] [2020-07-07 12:25:25,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:25:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:25:25,852 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:25,852 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:25:25,852 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:25:25,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 12:25:25,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:25:25 BoogieIcfgContainer [2020-07-07 12:25:25,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:25:25,898 INFO L168 Benchmark]: Toolchain (without parser) took 36391.94 ms. Allocated memory was 146.3 MB in the beginning and 673.2 MB in the end (delta: 526.9 MB). Free memory was 102.8 MB in the beginning and 572.4 MB in the end (delta: -469.6 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:25,905 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 12:25:25,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.01 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 102.6 MB in the beginning and 173.6 MB in the end (delta: -71.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:25,907 INFO L168 Benchmark]: Boogie Preprocessor took 118.39 ms. Allocated memory is still 206.0 MB. Free memory was 173.6 MB in the beginning and 169.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:25,911 INFO L168 Benchmark]: RCFGBuilder took 1167.77 ms. Allocated memory was 206.0 MB in the beginning and 235.4 MB in the end (delta: 29.4 MB). Free memory was 169.5 MB in the beginning and 175.9 MB in the end (delta: -6.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:25,913 INFO L168 Benchmark]: TraceAbstraction took 34427.37 ms. Allocated memory was 235.4 MB in the beginning and 673.2 MB in the end (delta: 437.8 MB). Free memory was 175.9 MB in the beginning and 572.4 MB in the end (delta: -396.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:25,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.01 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 102.6 MB in the beginning and 173.6 MB in the end (delta: -71.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.39 ms. Allocated memory is still 206.0 MB. Free memory was 173.6 MB in the beginning and 169.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1167.77 ms. Allocated memory was 206.0 MB in the beginning and 235.4 MB in the end (delta: 29.4 MB). Free memory was 169.5 MB in the beginning and 175.9 MB in the end (delta: -6.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34427.37 ms. Allocated memory was 235.4 MB in the beginning and 673.2 MB in the end (delta: 437.8 MB). Free memory was 175.9 MB in the beginning and 572.4 MB in the end (delta: -396.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 [L590] COND TRUE 1 [L592] COND TRUE splverifierCounter < 4 [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) [L602] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L602] RET waterRise() [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) [L612] CALL changeMethaneLevel() [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 [L612] RET changeMethaneLevel() [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) [L633] CALL timeShift() [L432] COND FALSE !(\read(pumpRunning)) [L439] COND TRUE \read(systemActive) [L441] CALL processEnvironment() [L461] int tmp ; [L464] COND TRUE ! pumpRunning [L466] CALL, EXPR isHighWaterLevel() [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L564] CALL, EXPR isHighWaterSensorDry() [L886] int retValue_acc ; [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); [L564] RET, EXPR isHighWaterSensorDry() [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); [L466] RET, EXPR isHighWaterLevel() [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L470] CALL activatePump() [L489] pumpRunning = 1 [L470] RET activatePump() [L441] RET processEnvironment() [L447] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; [L785] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L410] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 606 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1933 SDtfs, 3181 SDslu, 3621 SDs, 0 SdLazy, 6437 SolverSat, 879 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=903occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 786 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...