/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:04:12,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:04:12,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:04:12,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:04:12,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:04:12,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:04:12,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:04:12,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:04:12,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:04:12,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:04:12,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:04:12,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:04:12,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:04:12,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:04:12,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:04:12,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:04:12,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:04:12,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:04:12,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:04:12,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:04:12,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:04:12,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:04:12,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:04:12,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:04:12,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:04:12,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:04:12,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:04:12,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:04:12,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:04:12,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:04:12,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:04:12,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:04:12,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:04:12,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:04:12,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:04:12,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:04:12,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:04:12,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:04:12,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:04:12,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:04:12,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:04:12,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:04:12,268 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:04:12,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:04:12,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:04:12,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:04:12,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:04:12,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:04:12,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:04:12,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:04:12,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:04:12,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:04:12,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:04:12,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:04:12,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:04:12,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:04:12,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:04:12,279 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:04:12,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:04:12,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:04:12,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:04:12,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:04:12,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:04:12,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:04:12,281 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:04:12,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:04:12,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:04:12,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:04:12,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:04:12,731 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:04:12,731 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:04:12,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2021-02-22 01:04:12,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff43ef5f/3cdf999fec744d9ab20b7d8da2d67610/FLAGf07a34474 [2021-02-22 01:04:13,440 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:04:13,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2021-02-22 01:04:13,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff43ef5f/3cdf999fec744d9ab20b7d8da2d67610/FLAGf07a34474 [2021-02-22 01:04:13,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff43ef5f/3cdf999fec744d9ab20b7d8da2d67610 [2021-02-22 01:04:13,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:04:13,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:04:13,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:04:13,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:04:13,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:04:13,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:04:13" (1/1) ... [2021-02-22 01:04:13,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1d3f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:13, skipping insertion in model container [2021-02-22 01:04:13,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:04:13" (1/1) ... [2021-02-22 01:04:13,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:04:13,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:04:14,135 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_product43.cil.c[2573,2586] [2021-02-22 01:04:14,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:04:14,261 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:04:14,283 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_product43.cil.c[2573,2586] [2021-02-22 01:04:14,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:04:14,538 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:04:14,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14 WrapperNode [2021-02-22 01:04:14,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:04:14,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:04:14,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:04:14,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:04:14,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (1/1) ... [2021-02-22 01:04:14,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (1/1) ... [2021-02-22 01:04:14,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (1/1) ... [2021-02-22 01:04:14,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (1/1) ... [2021-02-22 01:04:14,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (1/1) ... [2021-02-22 01:04:14,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (1/1) ... [2021-02-22 01:04:14,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (1/1) ... [2021-02-22 01:04:14,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:04:14,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:04:14,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:04:14,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:04:14,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (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 [2021-02-22 01:04:14,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:04:14,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:04:14,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:04:14,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:04:14,747 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:04:14,747 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:04:14,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:04:14,747 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:04:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:04:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:04:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:04:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:04:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:04:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:04:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:04:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:04:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:04:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:04:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:04:14,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:04:14,750 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:04:14,750 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:04:14,750 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:04:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:04:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-22 01:04:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:04:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:04:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:04:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:04:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:04:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 01:04:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 01:04:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:04:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:04:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:04:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:04:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:04:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:04:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:04:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 01:04:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:04:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:04:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:04:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:04:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:04:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:04:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:04:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:04:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:04:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:04:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:04:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:04:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:04:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:04:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:04:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:04:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:04:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:04:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:04:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:04:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:04:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:04:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:04:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:04:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:04:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:04:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:04:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:04:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:04:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:04:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:04:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:04:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:04:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:04:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:04:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:04:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:04:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:04:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:04:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:04:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:04:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:04:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 01:04:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:04:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:04:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 01:04:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:04:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:04:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 01:04:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-22 01:04:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:04:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:04:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:04:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:04:15,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:04:15,915 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:04:15,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:04:15 BoogieIcfgContainer [2021-02-22 01:04:15,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:04:15,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:04:15,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:04:15,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:04:15,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:04:13" (1/3) ... [2021-02-22 01:04:15,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e06933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:04:15, skipping insertion in model container [2021-02-22 01:04:15,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:14" (2/3) ... [2021-02-22 01:04:15,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e06933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:04:15, skipping insertion in model container [2021-02-22 01:04:15,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:04:15" (3/3) ... [2021-02-22 01:04:15,927 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2021-02-22 01:04:15,934 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:04:15,940 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:04:15,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:04:15,985 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:04:15,986 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:04:15,986 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:04:15,986 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:04:15,986 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:04:15,986 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:04:15,987 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:04:15,987 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:04:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states. [2021-02-22 01:04:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:04:16,032 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:16,034 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] [2021-02-22 01:04:16,034 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:16,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:16,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1496528977, now seen corresponding path program 1 times [2021-02-22 01:04:16,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:16,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131867852] [2021-02-22 01:04:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:16,138 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:16,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:16,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:16,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:16,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:16,919 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:16,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:16,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:16,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:17,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:17,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:17,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:17,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:17,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:17,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:17,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:17,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:17,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:17,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:17,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:04:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:17,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:17,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:04:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:17,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:17,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:17,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:04:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:17,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:17,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:17,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131867852] [2021-02-22 01:04:17,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:17,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:04:17,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011058279] [2021-02-22 01:04:17,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:04:17,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:17,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:04:17,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:04:17,126 INFO L87 Difference]: Start difference. First operand 321 states. Second operand 3 states. [2021-02-22 01:04:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:18,768 INFO L93 Difference]: Finished difference Result 503 states and 594 transitions. [2021-02-22 01:04:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:04:18,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:04:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:18,787 INFO L225 Difference]: With dead ends: 503 [2021-02-22 01:04:18,788 INFO L226 Difference]: Without dead ends: 312 [2021-02-22 01:04:18,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:04:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-22 01:04:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 269. [2021-02-22 01:04:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2021-02-22 01:04:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2021-02-22 01:04:18,962 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 158 [2021-02-22 01:04:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:18,963 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2021-02-22 01:04:18,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:04:18,963 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2021-02-22 01:04:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:04:18,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:18,968 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] [2021-02-22 01:04:18,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:04:18,969 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:18,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1512702236, now seen corresponding path program 1 times [2021-02-22 01:04:18,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:18,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216391767] [2021-02-22 01:04:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:18,974 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:19,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,448 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:04:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:04:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:04:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:19,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:19,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:19,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216391767] [2021-02-22 01:04:19,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:19,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:04:19,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616666111] [2021-02-22 01:04:19,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:04:19,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:19,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:04:19,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:04:19,600 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 4 states. [2021-02-22 01:04:20,401 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:04:21,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:21,546 INFO L93 Difference]: Finished difference Result 410 states and 458 transitions. [2021-02-22 01:04:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:04:21,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:04:21,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:21,552 INFO L225 Difference]: With dead ends: 410 [2021-02-22 01:04:21,552 INFO L226 Difference]: Without dead ends: 295 [2021-02-22 01:04:21,554 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 [2021-02-22 01:04:21,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-22 01:04:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 259. [2021-02-22 01:04:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-02-22 01:04:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 278 transitions. [2021-02-22 01:04:21,653 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 278 transitions. Word has length 159 [2021-02-22 01:04:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:21,654 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 278 transitions. [2021-02-22 01:04:21,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:04:21,654 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 278 transitions. [2021-02-22 01:04:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-22 01:04:21,657 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:21,657 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] [2021-02-22 01:04:21,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:04:21,658 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:21,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1024484371, now seen corresponding path program 1 times [2021-02-22 01:04:21,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:21,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010184626] [2021-02-22 01:04:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:21,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:21,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:21,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:21,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:21,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:21,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:21,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:21,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:21,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:21,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:21,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:04:21,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:21,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:04:21,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:21,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:04:21,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:21,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,171 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:22,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:04:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:22,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:22,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:22,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:04:22,306 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-22 01:04:22,307 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-22 01:04:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:22,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:04:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:22,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:04:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:22,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-22 01:04:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:22,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:22,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:22,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010184626] [2021-02-22 01:04:22,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:22,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:04:22,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662638157] [2021-02-22 01:04:22,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:04:22,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:22,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:04:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:04:22,418 INFO L87 Difference]: Start difference. First operand 259 states and 278 transitions. Second operand 9 states. [2021-02-22 01:04:23,014 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:23,424 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:04:23,797 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:04:24,176 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:24,541 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:24,930 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:25,993 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:04:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:28,414 INFO L93 Difference]: Finished difference Result 689 states and 785 transitions. [2021-02-22 01:04:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:04:28,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-22 01:04:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:28,423 INFO L225 Difference]: With dead ends: 689 [2021-02-22 01:04:28,423 INFO L226 Difference]: Without dead ends: 545 [2021-02-22 01:04:28,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:04:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-02-22 01:04:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 466. [2021-02-22 01:04:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2021-02-22 01:04:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 515 transitions. [2021-02-22 01:04:28,644 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 515 transitions. Word has length 168 [2021-02-22 01:04:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:28,645 INFO L480 AbstractCegarLoop]: Abstraction has 466 states and 515 transitions. [2021-02-22 01:04:28,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:04:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 515 transitions. [2021-02-22 01:04:28,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-22 01:04:28,649 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:28,650 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] [2021-02-22 01:04:28,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:04:28,650 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:28,651 INFO L82 PathProgramCache]: Analyzing trace with hash -751554570, now seen corresponding path program 1 times [2021-02-22 01:04:28,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:28,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592956230] [2021-02-22 01:04:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:28,655 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:28,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:28,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:28,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:28,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:28,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:28,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:28,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:28,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:28,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:28,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:28,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:28,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,099 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:29,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-22 01:04:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:29,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:04:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:04:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-22 01:04:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-22 01:04:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-22 01:04:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:29,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:29,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:29,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592956230] [2021-02-22 01:04:29,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:29,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:04:29,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712726738] [2021-02-22 01:04:29,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:04:29,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:29,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:04:29,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:04:29,326 INFO L87 Difference]: Start difference. First operand 466 states and 515 transitions. Second operand 6 states. [2021-02-22 01:04:29,980 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:31,930 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:04:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:32,734 INFO L93 Difference]: Finished difference Result 1171 states and 1362 transitions. [2021-02-22 01:04:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:04:32,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2021-02-22 01:04:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:32,749 INFO L225 Difference]: With dead ends: 1171 [2021-02-22 01:04:32,749 INFO L226 Difference]: Without dead ends: 820 [2021-02-22 01:04:32,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:04:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-02-22 01:04:33,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 704. [2021-02-22 01:04:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2021-02-22 01:04:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 777 transitions. [2021-02-22 01:04:33,104 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 777 transitions. Word has length 176 [2021-02-22 01:04:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:33,105 INFO L480 AbstractCegarLoop]: Abstraction has 704 states and 777 transitions. [2021-02-22 01:04:33,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:04:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 777 transitions. [2021-02-22 01:04:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-22 01:04:33,108 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:33,108 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] [2021-02-22 01:04:33,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:04:33,109 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:33,109 INFO L82 PathProgramCache]: Analyzing trace with hash -775423515, now seen corresponding path program 1 times [2021-02-22 01:04:33,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:33,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76660630] [2021-02-22 01:04:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:33,113 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,500 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:33,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:04:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:04:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:04:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-22 01:04:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-22 01:04:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:33,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76660630] [2021-02-22 01:04:33,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:33,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:04:33,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203275633] [2021-02-22 01:04:33,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:04:33,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:33,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:04:33,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:04:33,708 INFO L87 Difference]: Start difference. First operand 704 states and 777 transitions. Second operand 9 states. [2021-02-22 01:04:34,310 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:35,950 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:36,322 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:36,762 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:37,145 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:37,511 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:37,877 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:38,264 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:39,940 INFO L93 Difference]: Finished difference Result 1817 states and 2106 transitions. [2021-02-22 01:04:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:04:39,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-22 01:04:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:39,948 INFO L225 Difference]: With dead ends: 1817 [2021-02-22 01:04:39,948 INFO L226 Difference]: Without dead ends: 1228 [2021-02-22 01:04:39,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:04:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-02-22 01:04:40,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1145. [2021-02-22 01:04:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2021-02-22 01:04:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1280 transitions. [2021-02-22 01:04:40,502 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1280 transitions. Word has length 177 [2021-02-22 01:04:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:40,503 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 1280 transitions. [2021-02-22 01:04:40,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:04:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1280 transitions. [2021-02-22 01:04:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:04:40,517 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:40,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:04:40,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:04:40,517 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:40,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1051388138, now seen corresponding path program 1 times [2021-02-22 01:04:40,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:40,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764056082] [2021-02-22 01:04:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:40,526 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:04:40,628 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:04:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:04:40,768 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:04:41,001 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:04:41,003 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:04:41,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:04:41,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:04:41 BoogieIcfgContainer [2021-02-22 01:04:41,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:04:41,040 INFO L168 Benchmark]: Toolchain (without parser) took 27278.65 ms. Allocated memory was 151.0 MB in the beginning and 626.0 MB in the end (delta: 475.0 MB). Free memory was 126.2 MB in the beginning and 231.4 MB in the end (delta: -105.2 MB). Peak memory consumption was 370.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:41,041 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 82.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:04:41,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.92 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 128.4 MB in the end (delta: -3.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:41,041 INFO L168 Benchmark]: Boogie Preprocessor took 116.92 ms. Allocated memory is still 151.0 MB. Free memory was 128.4 MB in the beginning and 124.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:41,042 INFO L168 Benchmark]: RCFGBuilder took 1260.50 ms. Allocated memory was 151.0 MB in the beginning and 208.7 MB in the end (delta: 57.7 MB). Free memory was 124.5 MB in the beginning and 162.8 MB in the end (delta: -38.3 MB). Peak memory consumption was 46.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:41,042 INFO L168 Benchmark]: TraceAbstraction took 25119.06 ms. Allocated memory was 208.7 MB in the beginning and 626.0 MB in the end (delta: 417.3 MB). Free memory was 162.3 MB in the beginning and 231.4 MB in the end (delta: -69.1 MB). Peak memory consumption was 347.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:41,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 82.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 757.92 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 128.4 MB in the end (delta: -3.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 116.92 ms. Allocated memory is still 151.0 MB. Free memory was 128.4 MB in the beginning and 124.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1260.50 ms. Allocated memory was 151.0 MB in the beginning and 208.7 MB in the end (delta: 57.7 MB). Free memory was 124.5 MB in the beginning and 162.8 MB in the end (delta: -38.3 MB). Peak memory consumption was 46.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25119.06 ms. Allocated memory was 208.7 MB in the beginning and 626.0 MB in the end (delta: 417.3 MB). Free memory was 162.3 MB in the beginning and 231.4 MB in the end (delta: -69.1 MB). Peak memory consumption was 347.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L361] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L599] int pumpRunning = 0; [L600] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L785] int splverifierCounter ; [L786] int tmp ; [L787] int tmp___0 ; [L788] int tmp___1 ; [L789] int tmp___2 ; [L792] splverifierCounter = 0 [L794] COND TRUE 1 [L796] COND TRUE splverifierCounter < 4 [L802] tmp = __VERIFIER_nondet_int() [L804] COND TRUE \read(tmp) [L806] CALL waterRise() [L869] COND TRUE waterLevel < 2 [L870] waterLevel = waterLevel + 1 [L806] RET waterRise() [L812] tmp___0 = __VERIFIER_nondet_int() [L814] COND FALSE !(\read(tmp___0)) [L822] tmp___2 = __VERIFIER_nondet_int() [L824] COND FALSE !(\read(tmp___2)) [L828] tmp___1 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___1) [L832] CALL stopSystem() [L772] COND FALSE !(\read(pumpRunning)) [L779] systemActive = 0 [L832] RET stopSystem() [L839] CALL timeShift() [L606] COND FALSE !(\read(pumpRunning)) [L613] COND FALSE !(\read(systemActive)) [L621] CALL __utac_acc__Specification3_spec__1() [L159] int tmp ; [L160] int tmp___0 ; [L161] int tmp___1 ; [L165] CALL, EXPR isMethaneLevelCritical() [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); [L165] RET, EXPR isMethaneLevelCritical() [L165] tmp = isMethaneLevelCritical() [L167] COND FALSE !(\read(tmp)) [L171] CALL, EXPR getWaterLevel() [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp___0 = getWaterLevel() [L173] COND TRUE tmp___0 == 2 [L175] CALL, EXPR isPumpRunning() [L705] int retValue_acc ; [L708] retValue_acc = pumpRunning [L709] return (retValue_acc); [L175] RET, EXPR isPumpRunning() [L175] tmp___1 = isPumpRunning() [L177] COND FALSE !(\read(tmp___1)) [L181] CALL __automaton_fail() [L150] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 636 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 19.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1285 SDtfs, 1749 SDslu, 1693 SDs, 0 SdLazy, 3644 SolverSat, 547 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1145occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 357 StatesRemovedByMinimization, 5 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...