/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:24:11,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:24:11,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:24:11,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:24:11,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:24:11,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:24:11,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:24:11,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:24:11,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:24:11,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:24:11,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:24:11,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:24:11,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:24:11,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:24:11,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:24:11,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:24:11,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:24:11,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:24:11,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:24:11,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:24:11,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:24:11,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:24:11,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:24:11,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:24:11,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:24:11,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:24:11,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:24:11,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:24:11,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:24:11,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:24:11,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:24:11,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:24:11,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:24:11,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:24:11,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:24:11,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:24:11,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:24:11,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:24:11,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:24:11,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:24:11,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:24:11,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:24:11,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:24:11,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:24:11,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:24:11,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:24:11,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:24:11,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:24:11,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:24:11,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:24:11,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:24:11,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:24:11,341 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:24:11,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:24:11,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:24:11,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:24:11,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:24:11,343 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:24:11,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:24:11,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:24:11,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:24:11,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:24:11,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:24:11,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:24:11,344 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:24:11,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:24:11,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:24:11,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:24:11,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:24:11,734 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:24:11,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2021-02-23 16:24:11,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4040bcf/b4ac4631ca0c448887a14570a74145a2/FLAGe94c3fee2 [2021-02-23 16:24:12,517 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:24:12,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2021-02-23 16:24:12,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4040bcf/b4ac4631ca0c448887a14570a74145a2/FLAGe94c3fee2 [2021-02-23 16:24:12,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4040bcf/b4ac4631ca0c448887a14570a74145a2 [2021-02-23 16:24:12,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:24:12,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:24:12,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:24:12,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:24:12,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:24:12,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:24:12" (1/1) ... [2021-02-23 16:24:12,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49af5746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:12, skipping insertion in model container [2021-02-23 16:24:12,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:24:12" (1/1) ... [2021-02-23 16:24:12,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:24:12,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:24:13,111 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c[1867,1880] [2021-02-23 16:24:13,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:24:13,304 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:24:13,333 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c[1867,1880] [2021-02-23 16:24:13,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:24:13,477 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:24:13,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13 WrapperNode [2021-02-23 16:24:13,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:24:13,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:24:13,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:24:13,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:24:13,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (1/1) ... [2021-02-23 16:24:13,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (1/1) ... [2021-02-23 16:24:13,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (1/1) ... [2021-02-23 16:24:13,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (1/1) ... [2021-02-23 16:24:13,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (1/1) ... [2021-02-23 16:24:13,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (1/1) ... [2021-02-23 16:24:13,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (1/1) ... [2021-02-23 16:24:13,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:24:13,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:24:13,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:24:13,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:24:13,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (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 [2021-02-23 16:24:13,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:24:13,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:24:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:24:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:24:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:24:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:24:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:24:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:24:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:24:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:24:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:24:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:24:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:24:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:24:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:24:13,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:24:13,738 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:24:13,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:24:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:24:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:24:13,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:24:13,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:24:13,744 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:24:13,744 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:24:13,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:24:13,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:24:13,745 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:24:13,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:24:13,745 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:24:13,745 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:24:13,745 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:24:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:24:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:24:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:24:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:24:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:24:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:24:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:24:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:24:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:24:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:24:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:24:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:24:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:24:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:24:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:24:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:24:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:24:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:24:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:24:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:24:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:24:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:24:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:24:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:24:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:24:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:24:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:24:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:24:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:24:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:24:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:24:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:24:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:24:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:24:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:24:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:24:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:24:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:24:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:24:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:24:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:24:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:24:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:24:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:24:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:24:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:24:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:24:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:24:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:24:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:24:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:24:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:24:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:24:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:24:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:24:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:24:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:24:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:24:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:24:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:24:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:24:15,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:24:15,250 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:24:15,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:24:15 BoogieIcfgContainer [2021-02-23 16:24:15,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:24:15,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:24:15,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:24:15,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:24:15,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:24:12" (1/3) ... [2021-02-23 16:24:15,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca833f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:24:15, skipping insertion in model container [2021-02-23 16:24:15,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:13" (2/3) ... [2021-02-23 16:24:15,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca833f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:24:15, skipping insertion in model container [2021-02-23 16:24:15,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:24:15" (3/3) ... [2021-02-23 16:24:15,262 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c [2021-02-23 16:24:15,269 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:24:15,275 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:24:15,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:24:15,323 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:24:15,324 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:24:15,324 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:24:15,324 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:24:15,324 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:24:15,324 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:24:15,324 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:24:15,325 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:24:15,347 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2021-02-23 16:24:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:24:15,367 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:15,368 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] [2021-02-23 16:24:15,369 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash 375322265, now seen corresponding path program 1 times [2021-02-23 16:24:15,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:15,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411114562] [2021-02-23 16:24:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:15,458 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:15,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:15,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:15,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:15,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,242 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:16,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:16,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:16,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:16,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:16,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:16,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:16,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:16,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:16,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:16,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:16,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:24:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:16,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:16,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:16,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:16,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:24:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:16,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:16,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:16,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411114562] [2021-02-23 16:24:16,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:16,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:24:16,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75502604] [2021-02-23 16:24:16,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:24:16,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:16,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:24:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:24:16,591 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 3 states. [2021-02-23 16:24:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:18,180 INFO L93 Difference]: Finished difference Result 441 states and 523 transitions. [2021-02-23 16:24:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:24:18,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:24:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:18,199 INFO L225 Difference]: With dead ends: 441 [2021-02-23 16:24:18,200 INFO L226 Difference]: Without dead ends: 279 [2021-02-23 16:24:18,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:24:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-23 16:24:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 240. [2021-02-23 16:24:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-23 16:24:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 258 transitions. [2021-02-23 16:24:18,375 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 258 transitions. Word has length 158 [2021-02-23 16:24:18,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:18,376 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 258 transitions. [2021-02-23 16:24:18,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:24:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 258 transitions. [2021-02-23 16:24:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:24:18,381 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:18,381 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] [2021-02-23 16:24:18,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:24:18,382 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1828143069, now seen corresponding path program 1 times [2021-02-23 16:24:18,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:18,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247198655] [2021-02-23 16:24:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:18,388 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:18,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,880 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:24:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:24:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:18,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:24:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:18,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:18,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:19,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247198655] [2021-02-23 16:24:19,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:19,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:24:19,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277861999] [2021-02-23 16:24:19,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:24:19,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:19,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:24:19,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:24:19,011 INFO L87 Difference]: Start difference. First operand 240 states and 258 transitions. Second operand 4 states. [2021-02-23 16:24:19,769 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:24:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:20,664 INFO L93 Difference]: Finished difference Result 357 states and 397 transitions. [2021-02-23 16:24:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:24:20,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:24:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:20,669 INFO L225 Difference]: With dead ends: 357 [2021-02-23 16:24:20,669 INFO L226 Difference]: Without dead ends: 262 [2021-02-23 16:24:20,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:24:20,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-23 16:24:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-23 16:24:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-23 16:24:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 245 transitions. [2021-02-23 16:24:20,757 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 245 transitions. Word has length 159 [2021-02-23 16:24:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:20,758 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 245 transitions. [2021-02-23 16:24:20,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:24:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 245 transitions. [2021-02-23 16:24:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:24:20,760 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:20,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:20,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:24:20,761 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1762567636, now seen corresponding path program 1 times [2021-02-23 16:24:20,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:20,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085029411] [2021-02-23 16:24:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:20,766 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:20,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:20,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:20,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:24:20,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,208 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:21,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:21,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:24:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:21,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:21,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:21,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:24:21,342 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:24:21,344 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:24:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:21,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:21,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:24:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:21,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:24:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:21,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:21,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:21,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085029411] [2021-02-23 16:24:21,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:21,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:24:21,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509646084] [2021-02-23 16:24:21,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:24:21,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:21,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:24:21,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:24:21,454 INFO L87 Difference]: Start difference. First operand 230 states and 245 transitions. Second operand 9 states. [2021-02-23 16:24:22,069 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:22,517 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:24:22,866 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:24:23,229 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:23,608 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:23,948 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:25,311 INFO L93 Difference]: Finished difference Result 377 states and 422 transitions. [2021-02-23 16:24:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:24:25,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:24:25,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:25,316 INFO L225 Difference]: With dead ends: 377 [2021-02-23 16:24:25,316 INFO L226 Difference]: Without dead ends: 262 [2021-02-23 16:24:25,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:24:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-23 16:24:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-23 16:24:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-23 16:24:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 244 transitions. [2021-02-23 16:24:25,471 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 244 transitions. Word has length 168 [2021-02-23 16:24:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:25,473 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 244 transitions. [2021-02-23 16:24:25,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:24:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 244 transitions. [2021-02-23 16:24:25,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 16:24:25,479 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:25,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:25,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:24:25,480 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:25,481 INFO L82 PathProgramCache]: Analyzing trace with hash -745615343, now seen corresponding path program 1 times [2021-02-23 16:24:25,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:25,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133193307] [2021-02-23 16:24:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:25,488 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:25,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:25,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:25,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:25,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:25,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:25,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:25,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,900 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:24:25,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:26,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:26,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:26,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:24:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:26,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:26,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:24:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:26,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:24:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:26,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:26,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:26,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:26,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:24:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:26,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:26,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:26,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133193307] [2021-02-23 16:24:26,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:26,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:24:26,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390301604] [2021-02-23 16:24:26,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:24:26,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:26,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:24:26,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:24:26,113 INFO L87 Difference]: Start difference. First operand 230 states and 244 transitions. Second operand 9 states. [2021-02-23 16:24:26,755 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:28,482 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:28,876 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:29,300 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:29,693 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:30,080 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:30,512 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:30,862 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:31,563 INFO L93 Difference]: Finished difference Result 527 states and 618 transitions. [2021-02-23 16:24:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:24:31,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-23 16:24:31,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:31,577 INFO L225 Difference]: With dead ends: 527 [2021-02-23 16:24:31,577 INFO L226 Difference]: Without dead ends: 412 [2021-02-23 16:24:31,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:24:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-02-23 16:24:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 337. [2021-02-23 16:24:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-02-23 16:24:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 368 transitions. [2021-02-23 16:24:31,759 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 368 transitions. Word has length 176 [2021-02-23 16:24:31,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:31,760 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 368 transitions. [2021-02-23 16:24:31,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:24:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 368 transitions. [2021-02-23 16:24:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-23 16:24:31,763 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:31,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:31,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:24:31,763 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:31,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:31,764 INFO L82 PathProgramCache]: Analyzing trace with hash 562380444, now seen corresponding path program 1 times [2021-02-23 16:24:31,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:31,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36964869] [2021-02-23 16:24:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:31,768 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:24:31,860 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:24:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:24:31,964 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:24:32,213 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:24:32,214 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:24:32,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:24:32,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:24:32 BoogieIcfgContainer [2021-02-23 16:24:32,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:24:32,264 INFO L168 Benchmark]: Toolchain (without parser) took 19419.96 ms. Allocated memory was 175.1 MB in the beginning and 483.4 MB in the end (delta: 308.3 MB). Free memory was 130.5 MB in the beginning and 303.2 MB in the end (delta: -172.7 MB). Peak memory consumption was 136.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:32,264 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 175.1 MB. Free memory is still 148.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:24:32,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.76 ms. Allocated memory is still 175.1 MB. Free memory was 129.4 MB in the beginning and 151.4 MB in the end (delta: -22.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:32,269 INFO L168 Benchmark]: Boogie Preprocessor took 108.85 ms. Allocated memory is still 175.1 MB. Free memory was 151.4 MB in the beginning and 147.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:32,270 INFO L168 Benchmark]: RCFGBuilder took 1664.14 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 147.5 MB in the beginning and 127.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 57.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:32,270 INFO L168 Benchmark]: TraceAbstraction took 17002.67 ms. Allocated memory was 210.8 MB in the beginning and 483.4 MB in the end (delta: 272.6 MB). Free memory was 126.9 MB in the beginning and 303.2 MB in the end (delta: -176.3 MB). Peak memory consumption was 96.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:32,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 175.1 MB. Free memory is still 148.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 627.76 ms. Allocated memory is still 175.1 MB. Free memory was 129.4 MB in the beginning and 151.4 MB in the end (delta: -22.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.85 ms. Allocated memory is still 175.1 MB. Free memory was 151.4 MB in the beginning and 147.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1664.14 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 147.5 MB in the beginning and 127.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 57.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17002.67 ms. Allocated memory was 210.8 MB in the beginning and 483.4 MB in the end (delta: 272.6 MB). Free memory was 126.9 MB in the beginning and 303.2 MB in the end (delta: -176.3 MB). Peak memory consumption was 96.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 84]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L258] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L460] int waterLevel = 1; [L461] int methaneLevelCritical = 0; [L587] int cleanupTimeShifts = 4; [L688] int pumpRunning = 0; [L689] int systemActive = 1; [L663] int retValue_acc ; [L664] int tmp ; [L668] FCALL select_helpers() [L669] FCALL select_features() [L670] CALL, EXPR valid_product() [L578] int retValue_acc ; [L581] retValue_acc = 1 [L582] return (retValue_acc); [L670] RET, EXPR valid_product() [L670] tmp = valid_product() [L672] COND TRUE \read(tmp) [L674] FCALL setup() [L675] CALL runTest() [L657] CALL test() [L859] int splverifierCounter ; [L860] int tmp ; [L861] int tmp___0 ; [L862] int tmp___1 ; [L863] int tmp___2 ; [L866] splverifierCounter = 0 [L868] COND TRUE 1 [L870] COND TRUE splverifierCounter < 4 [L876] tmp = __VERIFIER_nondet_int() [L878] COND TRUE \read(tmp) [L880] CALL waterRise() [L478] COND TRUE waterLevel < 2 [L479] waterLevel = waterLevel + 1 [L880] RET waterRise() [L886] tmp___0 = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp___0)) [L896] tmp___2 = __VERIFIER_nondet_int() [L898] COND TRUE \read(tmp___2) [L911] CALL timeShift() [L695] COND FALSE !(\read(pumpRunning)) [L702] COND TRUE \read(systemActive) [L704] CALL processEnvironment() [L724] int tmp ; [L727] COND FALSE !(\read(pumpRunning)) [L742] FCALL processEnvironment__wrappee__base() [L704] RET processEnvironment() [L710] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L499] int retValue_acc ; [L502] retValue_acc = methaneLevelCritical [L503] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L531] int retValue_acc ; [L534] retValue_acc = waterLevel [L535] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L794] int retValue_acc ; [L797] retValue_acc = pumpRunning [L798] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L84] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 876 SDtfs, 1044 SDslu, 1165 SDs, 0 SdLazy, 2274 SolverSat, 318 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 178 StatesRemovedByMinimization, 4 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...