/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_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:09:59,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:09:59,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:09:59,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:09:59,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:09:59,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:09:59,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:09:59,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:09:59,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:09:59,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:09:59,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:09:59,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:09:59,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:09:59,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:09:59,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:09:59,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:09:59,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:09:59,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:09:59,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:09:59,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:09:59,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:09:59,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:09:59,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:09:59,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:09:59,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:09:59,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:09:59,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:09:59,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:09:59,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:09:59,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:09:59,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:09:59,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:09:59,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:09:59,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:09:59,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:09:59,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:09:59,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:09:59,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:09:59,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:09:59,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:09:59,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:09:59,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:09:59,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:09:59,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:09:59,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:09:59,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:09:59,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:09:59,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:09:59,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:09:59,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:09:59,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:09:59,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:09:59,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:09:59,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:09:59,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:09:59,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:09:59,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:09:59,312 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:09:59,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:09:59,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:09:59,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:09:59,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:09:59,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:09:59,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:09:59,314 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:09:59,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:09:59,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:09:59,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:09:59,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:09:59,636 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:09:59,637 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-22 18:09:59,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91e6e444/c24081f3a91c417ab65fc8d13935dae0/FLAG5fea0556f [2020-08-22 18:10:00,213 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:10:00,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-22 18:10:00,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91e6e444/c24081f3a91c417ab65fc8d13935dae0/FLAG5fea0556f [2020-08-22 18:10:00,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91e6e444/c24081f3a91c417ab65fc8d13935dae0 [2020-08-22 18:10:00,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:10:00,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:10:00,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:10:00,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:10:00,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:10:00,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:10:00" (1/1) ... [2020-08-22 18:10:00,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d87a57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:00, skipping insertion in model container [2020-08-22 18:10:00,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:10:00" (1/1) ... [2020-08-22 18:10:00,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:10:00,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:10:01,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:10:01,017 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:10:01,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:10:01,221 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:10:01,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01 WrapperNode [2020-08-22 18:10:01,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:10:01,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:10:01,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:10:01,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:10:01,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (1/1) ... [2020-08-22 18:10:01,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (1/1) ... [2020-08-22 18:10:01,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (1/1) ... [2020-08-22 18:10:01,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (1/1) ... [2020-08-22 18:10:01,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (1/1) ... [2020-08-22 18:10:01,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (1/1) ... [2020-08-22 18:10:01,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (1/1) ... [2020-08-22 18:10:01,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:10:01,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:10:01,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:10:01,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:10:01,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:10:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:10:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:10:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:10:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:10:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:10:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:10:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:10:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:10:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:10:01,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:10:01,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:10:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:10:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:10:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:10:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:10:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:10:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:10:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:10:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 18:10:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:10:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:10:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:10:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:10:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:10:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 18:10:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:10:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 18:10:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:10:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:10:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:10:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:10:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:10:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:10:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:10:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:10:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:10:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:10:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:10:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:10:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 18:10:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:10:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:10:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:10:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:10:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:10:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:10:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:10:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:10:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:10:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:10:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:10:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:10:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:10:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:10:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:10:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:10:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:10:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:10:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:10:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:10:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:10:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:10:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:10:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:10:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:10:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:10:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:10:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:10:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:10:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:10:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 18:10:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:10:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:10:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:10:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:10:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:10:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:10:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:10:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 18:10:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:10:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:10:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:10:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:10:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:10:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 18:10:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 18:10:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:10:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:10:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:10:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:10:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:10:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:10:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:10:01,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:10:02,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:10:02,550 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:10:02,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:10:02 BoogieIcfgContainer [2020-08-22 18:10:02,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:10:02,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:10:02,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:10:02,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:10:02,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:10:00" (1/3) ... [2020-08-22 18:10:02,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4432f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:10:02, skipping insertion in model container [2020-08-22 18:10:02,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:10:01" (2/3) ... [2020-08-22 18:10:02,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4432f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:10:02, skipping insertion in model container [2020-08-22 18:10:02,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:10:02" (3/3) ... [2020-08-22 18:10:02,566 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-22 18:10:02,576 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:10:02,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:10:02,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:10:02,619 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:10:02,619 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:10:02,619 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:10:02,619 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:10:02,620 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:10:02,620 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:10:02,620 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:10:02,620 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:10:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-08-22 18:10:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 18:10:02,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:02,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:02,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:02,677 INFO L82 PathProgramCache]: Analyzing trace with hash 944307102, now seen corresponding path program 1 times [2020-08-22 18:10:02,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:02,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082841322] [2020-08-22 18:10:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:02,745 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,395 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:03,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 18:10:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:10:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:03,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082841322] [2020-08-22 18:10:03,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:03,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:10:03,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826003064] [2020-08-22 18:10:03,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:10:03,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:03,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:10:03,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:10:03,651 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 3 states. [2020-08-22 18:10:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:05,041 INFO L93 Difference]: Finished difference Result 494 states and 582 transitions. [2020-08-22 18:10:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:10:05,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 18:10:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:05,063 INFO L225 Difference]: With dead ends: 494 [2020-08-22 18:10:05,063 INFO L226 Difference]: Without dead ends: 306 [2020-08-22 18:10:05,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:10:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-22 18:10:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 262. [2020-08-22 18:10:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-22 18:10:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 282 transitions. [2020-08-22 18:10:05,215 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 282 transitions. Word has length 142 [2020-08-22 18:10:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:05,216 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 282 transitions. [2020-08-22 18:10:05,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:10:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 282 transitions. [2020-08-22 18:10:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 18:10:05,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:05,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:05,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:10:05,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash 990794439, now seen corresponding path program 1 times [2020-08-22 18:10:05,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:05,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028305706] [2020-08-22 18:10:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:05,226 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,687 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:10:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:10:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:05,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028305706] [2020-08-22 18:10:05,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:05,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:10:05,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71283743] [2020-08-22 18:10:05,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:10:05,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:05,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:10:05,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:10:05,758 INFO L87 Difference]: Start difference. First operand 262 states and 282 transitions. Second operand 4 states. [2020-08-22 18:10:06,414 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:07,374 INFO L93 Difference]: Finished difference Result 398 states and 443 transitions. [2020-08-22 18:10:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:10:07,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 18:10:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:07,380 INFO L225 Difference]: With dead ends: 398 [2020-08-22 18:10:07,380 INFO L226 Difference]: Without dead ends: 289 [2020-08-22 18:10:07,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:10:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-22 18:10:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 252. [2020-08-22 18:10:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-08-22 18:10:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 269 transitions. [2020-08-22 18:10:07,473 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 269 transitions. Word has length 143 [2020-08-22 18:10:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:07,474 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 269 transitions. [2020-08-22 18:10:07,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:10:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 269 transitions. [2020-08-22 18:10:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 18:10:07,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:07,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:07,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:10:07,477 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:07,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:07,478 INFO L82 PathProgramCache]: Analyzing trace with hash -844663911, now seen corresponding path program 1 times [2020-08-22 18:10:07,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:07,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469159688] [2020-08-22 18:10:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:07,481 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,775 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:10:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:10:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 18:10:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:07,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469159688] [2020-08-22 18:10:07,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:07,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:10:07,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110311149] [2020-08-22 18:10:07,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:10:07,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:07,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:10:07,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:10:07,932 INFO L87 Difference]: Start difference. First operand 252 states and 269 transitions. Second operand 10 states. [2020-08-22 18:10:08,410 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:08,707 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:08,950 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:10:09,222 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:09,451 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:09,676 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:10,598 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:12,846 INFO L93 Difference]: Finished difference Result 691 states and 795 transitions. [2020-08-22 18:10:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:10:12,850 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-22 18:10:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:12,855 INFO L225 Difference]: With dead ends: 691 [2020-08-22 18:10:12,855 INFO L226 Difference]: Without dead ends: 549 [2020-08-22 18:10:12,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-08-22 18:10:12,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-08-22 18:10:13,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 442. [2020-08-22 18:10:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-22 18:10:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 486 transitions. [2020-08-22 18:10:13,007 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 486 transitions. Word has length 156 [2020-08-22 18:10:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:13,007 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 486 transitions. [2020-08-22 18:10:13,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:10:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 486 transitions. [2020-08-22 18:10:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 18:10:13,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:13,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:13,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:10:13,012 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:13,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:13,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1137144832, now seen corresponding path program 1 times [2020-08-22 18:10:13,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:13,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322651590] [2020-08-22 18:10:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:13,016 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,462 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:10:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 18:10:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:10:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:13,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322651590] [2020-08-22 18:10:13,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:13,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:10:13,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102965650] [2020-08-22 18:10:13,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:10:13,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:10:13,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:10:13,703 INFO L87 Difference]: Start difference. First operand 442 states and 486 transitions. Second operand 14 states. [2020-08-22 18:10:14,164 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:14,490 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:14,777 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:15,024 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:15,269 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:15,507 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:16,116 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:17,124 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:17,391 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:17,717 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:18,023 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:18,262 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:18,490 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:10:18,745 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:18,987 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:19,217 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:19,547 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:19,881 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:10:20,146 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:20,439 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:22,554 INFO L93 Difference]: Finished difference Result 1524 states and 1873 transitions. [2020-08-22 18:10:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 18:10:22,555 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 161 [2020-08-22 18:10:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:22,564 INFO L225 Difference]: With dead ends: 1524 [2020-08-22 18:10:22,564 INFO L226 Difference]: Without dead ends: 1192 [2020-08-22 18:10:22,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 18:10:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-08-22 18:10:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1053. [2020-08-22 18:10:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-08-22 18:10:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1211 transitions. [2020-08-22 18:10:22,993 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1211 transitions. Word has length 161 [2020-08-22 18:10:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:22,994 INFO L479 AbstractCegarLoop]: Abstraction has 1053 states and 1211 transitions. [2020-08-22 18:10:22,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:10:22,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1211 transitions. [2020-08-22 18:10:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 18:10:23,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:23,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:23,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:10:23,001 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1039475204, now seen corresponding path program 1 times [2020-08-22 18:10:23,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:23,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992951020] [2020-08-22 18:10:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:23,006 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,288 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:10:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:10:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 18:10:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 18:10:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:23,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992951020] [2020-08-22 18:10:23,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:23,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:10:23,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852222129] [2020-08-22 18:10:23,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:10:23,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:23,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:10:23,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:10:23,494 INFO L87 Difference]: Start difference. First operand 1053 states and 1211 transitions. Second operand 6 states. [2020-08-22 18:10:24,111 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:26,301 INFO L93 Difference]: Finished difference Result 2464 states and 2978 transitions. [2020-08-22 18:10:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 18:10:26,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-08-22 18:10:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:26,314 INFO L225 Difference]: With dead ends: 2464 [2020-08-22 18:10:26,315 INFO L226 Difference]: Without dead ends: 1521 [2020-08-22 18:10:26,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:10:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2020-08-22 18:10:26,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1418. [2020-08-22 18:10:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-08-22 18:10:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1642 transitions. [2020-08-22 18:10:26,949 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1642 transitions. Word has length 166 [2020-08-22 18:10:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:26,949 INFO L479 AbstractCegarLoop]: Abstraction has 1418 states and 1642 transitions. [2020-08-22 18:10:26,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:10:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1642 transitions. [2020-08-22 18:10:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-22 18:10:26,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:26,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:26,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:10:26,956 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:26,957 INFO L82 PathProgramCache]: Analyzing trace with hash -39352853, now seen corresponding path program 1 times [2020-08-22 18:10:26,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:26,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452635958] [2020-08-22 18:10:26,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:26,988 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,378 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:10:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 18:10:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 18:10:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 18:10:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 18:10:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 18:10:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:27,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452635958] [2020-08-22 18:10:27,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:27,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 18:10:27,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767287946] [2020-08-22 18:10:27,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 18:10:27,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:27,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 18:10:27,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:10:27,667 INFO L87 Difference]: Start difference. First operand 1418 states and 1642 transitions. Second operand 11 states. [2020-08-22 18:10:28,127 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:30,276 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:30,520 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:30,798 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:31,047 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:31,265 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:32,065 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:32,286 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:32,532 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:33,082 INFO L93 Difference]: Finished difference Result 1602 states and 1908 transitions. [2020-08-22 18:10:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 18:10:33,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2020-08-22 18:10:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:33,093 INFO L225 Difference]: With dead ends: 1602 [2020-08-22 18:10:33,093 INFO L226 Difference]: Without dead ends: 1599 [2020-08-22 18:10:33,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-22 18:10:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2020-08-22 18:10:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1427. [2020-08-22 18:10:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-08-22 18:10:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1648 transitions. [2020-08-22 18:10:33,715 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1648 transitions. Word has length 209 [2020-08-22 18:10:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:33,715 INFO L479 AbstractCegarLoop]: Abstraction has 1427 states and 1648 transitions. [2020-08-22 18:10:33,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 18:10:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1648 transitions. [2020-08-22 18:10:33,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-22 18:10:33,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:33,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:33,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:10:33,727 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:33,727 INFO L82 PathProgramCache]: Analyzing trace with hash -797335436, now seen corresponding path program 1 times [2020-08-22 18:10:33,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:33,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808012274] [2020-08-22 18:10:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:33,750 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,026 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:10:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:10:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 18:10:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 18:10:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:10:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 18:10:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 18:10:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 18:10:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 18:10:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-22 18:10:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 18:10:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:34,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808012274] [2020-08-22 18:10:34,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:34,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:10:34,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973622482] [2020-08-22 18:10:34,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:10:34,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:34,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:10:34,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:10:34,468 INFO L87 Difference]: Start difference. First operand 1427 states and 1648 transitions. Second operand 15 states. [2020-08-22 18:10:34,939 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:35,690 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:36,736 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:37,006 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:10:37,294 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:10:37,599 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:37,848 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:38,113 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:10:38,424 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:38,695 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:10:38,947 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:39,252 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:39,545 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:39,803 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:41,967 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:42,226 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:42,494 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 18:10:42,754 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:43,039 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:43,284 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:45,200 INFO L93 Difference]: Finished difference Result 3284 states and 4201 transitions. [2020-08-22 18:10:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-22 18:10:45,201 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 314 [2020-08-22 18:10:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:45,216 INFO L225 Difference]: With dead ends: 3284 [2020-08-22 18:10:45,216 INFO L226 Difference]: Without dead ends: 1967 [2020-08-22 18:10:45,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 18:10:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-08-22 18:10:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1449. [2020-08-22 18:10:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2020-08-22 18:10:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1663 transitions. [2020-08-22 18:10:45,661 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1663 transitions. Word has length 314 [2020-08-22 18:10:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:45,662 INFO L479 AbstractCegarLoop]: Abstraction has 1449 states and 1663 transitions. [2020-08-22 18:10:45,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:10:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1663 transitions. [2020-08-22 18:10:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-08-22 18:10:45,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:45,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:45,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:10:45,669 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:45,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1895848680, now seen corresponding path program 1 times [2020-08-22 18:10:45,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:45,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045831684] [2020-08-22 18:10:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:45,681 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,073 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:10:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:10:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 18:10:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:10:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 18:10:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 18:10:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 18:10:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-08-22 18:10:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 18:10:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:46,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045831684] [2020-08-22 18:10:46,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:46,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:10:46,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162469573] [2020-08-22 18:10:46,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:10:46,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:46,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:10:46,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:10:46,355 INFO L87 Difference]: Start difference. First operand 1449 states and 1663 transitions. Second operand 15 states. [2020-08-22 18:10:46,920 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:47,167 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:47,407 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:47,649 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:47,878 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:48,767 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:49,067 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:49,318 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:49,582 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:49,808 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:51,354 INFO L93 Difference]: Finished difference Result 2743 states and 3293 transitions. [2020-08-22 18:10:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 18:10:51,355 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 262 [2020-08-22 18:10:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:51,364 INFO L225 Difference]: With dead ends: 2743 [2020-08-22 18:10:51,364 INFO L226 Difference]: Without dead ends: 1404 [2020-08-22 18:10:51,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-08-22 18:10:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-08-22 18:10:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1178. [2020-08-22 18:10:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-08-22 18:10:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1344 transitions. [2020-08-22 18:10:51,803 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1344 transitions. Word has length 262 [2020-08-22 18:10:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:51,803 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1344 transitions. [2020-08-22 18:10:51,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:10:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1344 transitions. [2020-08-22 18:10:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-08-22 18:10:51,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:51,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:51,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:10:51,810 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash -472658643, now seen corresponding path program 1 times [2020-08-22 18:10:51,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:51,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648198768] [2020-08-22 18:10:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:51,827 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,123 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:10:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:10:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 18:10:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 18:10:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:10:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-22 18:10:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 18:10:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 18:10:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 18:10:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 18:10:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:52,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648198768] [2020-08-22 18:10:52,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:52,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:10:52,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190293339] [2020-08-22 18:10:52,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:10:52,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:52,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:10:52,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:10:52,374 INFO L87 Difference]: Start difference. First operand 1178 states and 1344 transitions. Second operand 14 states. [2020-08-22 18:10:52,857 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:53,547 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:54,330 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:54,577 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:54,856 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:55,108 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:55,336 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:55,570 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:55,808 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:56,091 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:56,391 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:56,641 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:58,785 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:59,032 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:11:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:11:00,603 INFO L93 Difference]: Finished difference Result 3022 states and 3796 transitions. [2020-08-22 18:11:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-22 18:11:00,604 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 267 [2020-08-22 18:11:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:11:00,617 INFO L225 Difference]: With dead ends: 3022 [2020-08-22 18:11:00,617 INFO L226 Difference]: Without dead ends: 2174 [2020-08-22 18:11:00,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=562, Invalid=1508, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 18:11:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2020-08-22 18:11:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1541. [2020-08-22 18:11:01,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-08-22 18:11:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1786 transitions. [2020-08-22 18:11:01,417 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1786 transitions. Word has length 267 [2020-08-22 18:11:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:11:01,418 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 1786 transitions. [2020-08-22 18:11:01,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:11:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1786 transitions. [2020-08-22 18:11:01,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-22 18:11:01,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:11:01,427 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:11:01,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:11:01,428 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:11:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:11:01,428 INFO L82 PathProgramCache]: Analyzing trace with hash -593865687, now seen corresponding path program 2 times [2020-08-22 18:11:01,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:11:01,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667304947] [2020-08-22 18:11:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:11:01,444 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:11:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:11:01,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:11:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:11:01,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:11:01,908 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:11:01,908 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:11:01,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:11:01,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:11:01 BoogieIcfgContainer [2020-08-22 18:11:01,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:11:01,942 INFO L168 Benchmark]: Toolchain (without parser) took 61374.72 ms. Allocated memory was 140.0 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 103.3 MB in the beginning and 656.3 MB in the end (delta: -553.0 MB). Peak memory consumption was 524.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:11:01,943 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:11:01,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.73 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.1 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:11:01,944 INFO L168 Benchmark]: Boogie Preprocessor took 89.14 ms. Allocated memory is still 202.4 MB. Free memory was 172.1 MB in the beginning and 167.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:11:01,945 INFO L168 Benchmark]: RCFGBuilder took 1245.36 ms. Allocated memory was 202.4 MB in the beginning and 237.5 MB in the end (delta: 35.1 MB). Free memory was 167.8 MB in the beginning and 178.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:11:01,945 INFO L168 Benchmark]: TraceAbstraction took 59381.37 ms. Allocated memory was 237.5 MB in the beginning and 1.2 GB in the end (delta: 980.4 MB). Free memory was 177.3 MB in the beginning and 656.3 MB in the end (delta: -479.0 MB). Peak memory consumption was 501.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:11:01,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.73 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.1 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.14 ms. Allocated memory is still 202.4 MB. Free memory was 172.1 MB in the beginning and 167.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1245.36 ms. Allocated memory was 202.4 MB in the beginning and 237.5 MB in the end (delta: 35.1 MB). Free memory was 167.8 MB in the beginning and 178.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 59381.37 ms. Allocated memory was 237.5 MB in the beginning and 1.2 GB in the end (delta: 980.4 MB). Free memory was 177.3 MB in the beginning and 656.3 MB in the end (delta: -479.0 MB). Peak memory consumption was 501.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 59.2s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 49.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2354 SDtfs, 6135 SDslu, 6135 SDs, 0 SdLazy, 13681 SolverSat, 2193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 523 GetRequests, 309 SyntacticMatches, 6 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 22.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1541occurred 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: 3.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 1979 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...