/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:26:01,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:26:01,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:26:01,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:26:01,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:26:01,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:26:01,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:26:01,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:26:01,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:26:01,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:26:01,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:26:01,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:26:01,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:26:01,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:26:01,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:26:01,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:26:01,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:26:01,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:26:01,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:26:01,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:26:01,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:26:01,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:26:01,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:26:01,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:26:01,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:26:01,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:26:01,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:26:01,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:26:01,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:26:01,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:26:01,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:26:01,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:26:01,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:26:01,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:26:01,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:26:01,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:26:01,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:26:01,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:26:01,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:26:01,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:26:01,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:26:01,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:26:01,839 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:26:01,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:26:01,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:26:01,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:26:01,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:26:01,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:26:01,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:26:01,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:26:01,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:26:01,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:26:01,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:26:01,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:26:01,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:26:01,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:26:01,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:26:01,849 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:26:01,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:26:01,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:26:01,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:26:01,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:26:01,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:26:01,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:26:01,851 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:26:02,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:26:02,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:26:02,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:26:02,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:26:02,390 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:26:02,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2021-02-23 16:26:02,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000c83148/121ab905064c454fb6541efd627ececb/FLAGda6de3490 [2021-02-23 16:26:03,206 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:26:03,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2021-02-23 16:26:03,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000c83148/121ab905064c454fb6541efd627ececb/FLAGda6de3490 [2021-02-23 16:26:03,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000c83148/121ab905064c454fb6541efd627ececb [2021-02-23 16:26:03,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:26:03,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:26:03,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:26:03,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:26:03,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:26:03,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:26:03" (1/1) ... [2021-02-23 16:26:03,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244f0ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:03, skipping insertion in model container [2021-02-23 16:26:03,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:26:03" (1/1) ... [2021-02-23 16:26:03,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:26:03,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:26:03,806 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_product47.cil.c[1281,1294] [2021-02-23 16:26:03,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:26:03,969 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:26:03,993 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_product47.cil.c[1281,1294] [2021-02-23 16:26:04,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:26:04,148 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:26:04,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04 WrapperNode [2021-02-23 16:26:04,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:26:04,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:26:04,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:26:04,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:26:04,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (1/1) ... [2021-02-23 16:26:04,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (1/1) ... [2021-02-23 16:26:04,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (1/1) ... [2021-02-23 16:26:04,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (1/1) ... [2021-02-23 16:26:04,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (1/1) ... [2021-02-23 16:26:04,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (1/1) ... [2021-02-23 16:26:04,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (1/1) ... [2021-02-23 16:26:04,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:26:04,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:26:04,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:26:04,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:26:04,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:26:04,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:26:04,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:26:04,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:26:04,404 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:26:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:26:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:26:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:26:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:26:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:26:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:26:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:26:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:26:04,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:26:04,406 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:26:04,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:26:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:26:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:26:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:26:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:26:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:26:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:26:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:26:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:26:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:26:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:26:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:26:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:26:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:26:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:26:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:26:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:26:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:26:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:26:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:26:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:26:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:26:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:26:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:26:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:26:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:26:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:26:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:26:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:26:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:26:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:26:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:26:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:26:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:26:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:26:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:26:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:26:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:26:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:26:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:26:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:26:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:26:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:26:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:26:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:26:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:26:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:26:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:26:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:26:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:26:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:26:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:26:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:26:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:26:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:26:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:26:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:26:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:26:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:26:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:26:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:26:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:26:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:26:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:26:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:26:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:26:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:26:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:26:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:26:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:26:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:26:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:26:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:26:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:26:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:26:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:26:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:26:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:26:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:26:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:26:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:26:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:26:05,592 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:26:05,593 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:26:05,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:26:05 BoogieIcfgContainer [2021-02-23 16:26:05,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:26:05,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:26:05,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:26:05,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:26:05,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:26:03" (1/3) ... [2021-02-23 16:26:05,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711f62c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:26:05, skipping insertion in model container [2021-02-23 16:26:05,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:04" (2/3) ... [2021-02-23 16:26:05,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711f62c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:26:05, skipping insertion in model container [2021-02-23 16:26:05,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:26:05" (3/3) ... [2021-02-23 16:26:05,608 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2021-02-23 16:26:05,617 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:26:05,624 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:26:05,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:26:05,681 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:26:05,682 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:26:05,683 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:26:05,683 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:26:05,683 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:26:05,683 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:26:05,684 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:26:05,684 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:26:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states. [2021-02-23 16:26:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:26:05,763 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:05,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:26:05,764 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:05,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1629313999, now seen corresponding path program 1 times [2021-02-23 16:26:05,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:05,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997065653] [2021-02-23 16:26:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:05,881 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,667 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:26:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:26:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:26:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:06,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:06,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:26:06,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997065653] [2021-02-23 16:26:06,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:06,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:26:06,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573398833] [2021-02-23 16:26:06,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:26:06,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:06,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:26:06,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:26:06,924 INFO L87 Difference]: Start difference. First operand 333 states. Second operand 3 states. [2021-02-23 16:26:08,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:08,830 INFO L93 Difference]: Finished difference Result 529 states and 631 transitions. [2021-02-23 16:26:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:26:08,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:26:08,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:08,850 INFO L225 Difference]: With dead ends: 529 [2021-02-23 16:26:08,850 INFO L226 Difference]: Without dead ends: 326 [2021-02-23 16:26:08,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:26:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-02-23 16:26:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2021-02-23 16:26:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-23 16:26:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 308 transitions. [2021-02-23 16:26:09,055 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 308 transitions. Word has length 158 [2021-02-23 16:26:09,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:09,057 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 308 transitions. [2021-02-23 16:26:09,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:26:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 308 transitions. [2021-02-23 16:26:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:26:09,061 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:09,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:26:09,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:26:09,062 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:09,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1816359164, now seen corresponding path program 1 times [2021-02-23 16:26:09,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:09,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141236592] [2021-02-23 16:26:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:09,067 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:09,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,450 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:26:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:26:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:26:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:09,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:09,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:26:09,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141236592] [2021-02-23 16:26:09,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:09,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:26:09,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838635345] [2021-02-23 16:26:09,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:26:09,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:09,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:26:09,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:26:09,574 INFO L87 Difference]: Start difference. First operand 281 states and 308 transitions. Second operand 4 states. [2021-02-23 16:26:10,370 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:26:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:11,646 INFO L93 Difference]: Finished difference Result 439 states and 497 transitions. [2021-02-23 16:26:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:26:11,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:26:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:11,652 INFO L225 Difference]: With dead ends: 439 [2021-02-23 16:26:11,652 INFO L226 Difference]: Without dead ends: 309 [2021-02-23 16:26:11,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:26:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-02-23 16:26:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 271. [2021-02-23 16:26:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2021-02-23 16:26:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2021-02-23 16:26:11,788 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 159 [2021-02-23 16:26:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:11,789 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2021-02-23 16:26:11,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:26:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2021-02-23 16:26:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:26:11,792 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:11,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:26:11,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:26:11,793 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:11,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:11,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1677160890, now seen corresponding path program 1 times [2021-02-23 16:26:11,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:11,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523972980] [2021-02-23 16:26:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:11,798 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:11,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:11,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:11,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:11,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:11,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:11,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:11,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:11,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:11,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:11,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:26:11,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:11,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:26:11,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:11,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:26:11,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:11,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,222 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:12,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:26:12,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:12,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:12,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:12,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:26:12,331 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:26:12,332 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:26:12,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:12,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:26:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:12,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:26:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:12,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:26:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:12,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:12,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:26:12,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523972980] [2021-02-23 16:26:12,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:12,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:26:12,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248170510] [2021-02-23 16:26:12,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:26:12,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:12,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:26:12,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:26:12,431 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand 9 states. [2021-02-23 16:26:13,163 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:13,595 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:26:13,923 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:26:14,316 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:14,713 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:26:15,074 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:16,167 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:26:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:19,016 INFO L93 Difference]: Finished difference Result 729 states and 842 transitions. [2021-02-23 16:26:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:26:19,017 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:26:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:19,024 INFO L225 Difference]: With dead ends: 729 [2021-02-23 16:26:19,024 INFO L226 Difference]: Without dead ends: 573 [2021-02-23 16:26:19,026 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 [2021-02-23 16:26:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-02-23 16:26:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 502. [2021-02-23 16:26:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2021-02-23 16:26:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 565 transitions. [2021-02-23 16:26:19,270 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 565 transitions. Word has length 168 [2021-02-23 16:26:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:19,270 INFO L480 AbstractCegarLoop]: Abstraction has 502 states and 565 transitions. [2021-02-23 16:26:19,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:26:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 565 transitions. [2021-02-23 16:26:19,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:26:19,274 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:19,274 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] [2021-02-23 16:26:19,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:26:19,275 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:19,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1286669336, now seen corresponding path program 1 times [2021-02-23 16:26:19,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:19,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895815116] [2021-02-23 16:26:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:19,279 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,740 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:26:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:26:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:26:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-23 16:26:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:19,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-23 16:26:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:19,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:19,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:26:19,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895815116] [2021-02-23 16:26:19,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:19,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:26:19,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371824765] [2021-02-23 16:26:19,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:26:19,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:19,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:26:19,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:26:19,980 INFO L87 Difference]: Start difference. First operand 502 states and 565 transitions. Second operand 9 states. [2021-02-23 16:26:20,610 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:22,929 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:23,307 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:26:23,769 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:24,211 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:24,589 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:26:24,970 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:25,387 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:26,667 INFO L93 Difference]: Finished difference Result 1363 states and 1646 transitions. [2021-02-23 16:26:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:26:26,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-23 16:26:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:26,676 INFO L225 Difference]: With dead ends: 1363 [2021-02-23 16:26:26,677 INFO L226 Difference]: Without dead ends: 976 [2021-02-23 16:26:26,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:26:26,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-02-23 16:26:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 872. [2021-02-23 16:26:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2021-02-23 16:26:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1006 transitions. [2021-02-23 16:26:27,097 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1006 transitions. Word has length 177 [2021-02-23 16:26:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:27,097 INFO L480 AbstractCegarLoop]: Abstraction has 872 states and 1006 transitions. [2021-02-23 16:26:27,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:26:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1006 transitions. [2021-02-23 16:26:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:26:27,103 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:27,103 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] [2021-02-23 16:26:27,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:26:27,104 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1818383811, now seen corresponding path program 1 times [2021-02-23 16:26:27,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:27,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116601032] [2021-02-23 16:26:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:27,108 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:27,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:27,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:27,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:27,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:27,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:27,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,472 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:27,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:26:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:26:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:26:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:26:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-23 16:26:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:27,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:27,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:26:27,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116601032] [2021-02-23 16:26:27,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:27,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:26:27,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517046677] [2021-02-23 16:26:27,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:26:27,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:26:27,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:26:27,640 INFO L87 Difference]: Start difference. First operand 872 states and 1006 transitions. Second operand 6 states. [2021-02-23 16:26:28,315 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:30,978 INFO L93 Difference]: Finished difference Result 2011 states and 2421 transitions. [2021-02-23 16:26:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 16:26:30,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-23 16:26:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:30,986 INFO L225 Difference]: With dead ends: 2011 [2021-02-23 16:26:30,986 INFO L226 Difference]: Without dead ends: 1254 [2021-02-23 16:26:30,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:26:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-02-23 16:26:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1157. [2021-02-23 16:26:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2021-02-23 16:26:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1320 transitions. [2021-02-23 16:26:31,583 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1320 transitions. Word has length 182 [2021-02-23 16:26:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:31,584 INFO L480 AbstractCegarLoop]: Abstraction has 1157 states and 1320 transitions. [2021-02-23 16:26:31,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:26:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1320 transitions. [2021-02-23 16:26:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:26:31,588 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:31,588 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] [2021-02-23 16:26:31,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:26:31,589 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:31,589 INFO L82 PathProgramCache]: Analyzing trace with hash -320143715, now seen corresponding path program 1 times [2021-02-23 16:26:31,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:31,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780116950] [2021-02-23 16:26:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:31,593 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:26:31,666 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:26:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:26:31,738 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:26:31,931 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:26:31,931 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:26:31,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:26:31,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:26:31 BoogieIcfgContainer [2021-02-23 16:26:31,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:26:31,961 INFO L168 Benchmark]: Toolchain (without parser) took 28419.90 ms. Allocated memory was 151.0 MB in the beginning and 562.0 MB in the end (delta: 411.0 MB). Free memory was 126.5 MB in the beginning and 326.0 MB in the end (delta: -199.5 MB). Peak memory consumption was 212.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:31,962 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:26:31,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.65 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.2 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:31,963 INFO L168 Benchmark]: Boogie Preprocessor took 151.49 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 132.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:31,963 INFO L168 Benchmark]: RCFGBuilder took 1293.69 ms. Allocated memory is still 151.0 MB. Free memory was 132.0 MB in the beginning and 86.2 MB in the end (delta: 45.9 MB). Peak memory consumption was 66.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:31,964 INFO L168 Benchmark]: TraceAbstraction took 26362.37 ms. Allocated memory was 151.0 MB in the beginning and 562.0 MB in the end (delta: 411.0 MB). Free memory was 86.2 MB in the beginning and 326.0 MB in the end (delta: -239.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:31,969 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 587.65 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.2 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 151.49 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 132.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1293.69 ms. Allocated memory is still 151.0 MB. Free memory was 132.0 MB in the beginning and 86.2 MB in the end (delta: 45.9 MB). Peak memory consumption was 66.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26362.37 ms. Allocated memory was 151.0 MB in the beginning and 562.0 MB in the end (delta: 411.0 MB). Free memory was 86.2 MB in the beginning and 326.0 MB in the end (delta: -239.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L631] int pumpRunning = 0; [L632] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L132] int retValue_acc ; [L133] int tmp ; [L137] FCALL select_helpers() [L138] FCALL select_features() [L139] CALL, EXPR valid_product() [L181] int retValue_acc ; [L184] retValue_acc = 1 [L185] return (retValue_acc); [L139] RET, EXPR valid_product() [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) [L143] FCALL setup() [L144] CALL runTest() [L123] CALL test() [L558] int splverifierCounter ; [L559] int tmp ; [L560] int tmp___0 ; [L561] int tmp___1 ; [L562] int tmp___2 ; [L565] splverifierCounter = 0 [L567] COND TRUE 1 [L569] COND TRUE splverifierCounter < 4 [L575] tmp = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp) [L579] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L579] RET waterRise() [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp___0)) [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND FALSE !(\read(tmp___2)) [L601] tmp___1 = __VERIFIER_nondet_int() [L603] COND TRUE \read(tmp___1) [L605] CALL stopSystem() [L830] COND FALSE !(\read(pumpRunning)) [L837] systemActive = 0 [L605] RET stopSystem() [L612] CALL timeShift() [L639] COND FALSE !(\read(pumpRunning)) [L646] COND FALSE !(\read(systemActive)) [L654] CALL __utac_acc__Specification3_spec__1() [L938] int tmp ; [L939] int tmp___0 ; [L940] int tmp___1 ; [L944] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L944] RET, EXPR isMethaneLevelCritical() [L944] tmp = isMethaneLevelCritical() [L946] COND FALSE !(\read(tmp)) [L950] CALL, EXPR getWaterLevel() [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); [L950] RET, EXPR getWaterLevel() [L950] tmp___0 = getWaterLevel() [L952] COND TRUE tmp___0 == 2 [L954] CALL, EXPR isPumpRunning() [L763] int retValue_acc ; [L766] retValue_acc = pumpRunning [L767] return (retValue_acc); [L954] RET, EXPR isPumpRunning() [L954] tmp___1 = isPumpRunning() [L956] COND FALSE !(\read(tmp___1)) [L960] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 648 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1333 SDtfs, 2080 SDslu, 1509 SDs, 0 SdLazy, 3914 SolverSat, 715 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1157occurred 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: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 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...