/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:05:45,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:05:45,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:05:45,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:05:45,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:05:45,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:05:45,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:05:45,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:05:45,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:05:45,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:05:45,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:05:45,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:05:45,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:05:45,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:05:45,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:05:45,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:05:45,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:05:45,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:05:45,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:05:45,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:05:45,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:05:45,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:05:45,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:05:45,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:05:45,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:05:45,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:05:45,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:05:45,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:05:45,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:05:45,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:05:45,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:05:45,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:05:45,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:05:45,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:05:45,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:05:45,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:05:45,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:05:45,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:05:45,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:05:45,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:05:45,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:05:45,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:05:45,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:05:45,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:05:45,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:05:45,572 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:05:45,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:05:45,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:05:45,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:05:45,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:05:45,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:05:45,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:05:45,574 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:05:45,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:05:45,575 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:05:45,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:05:45,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:05:45,577 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:05:45,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:05:45,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:05:45,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:05:45,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:05:45,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:05:45,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:05:45,578 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:05:45,579 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:05:45,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:05:46,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:05:46,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:05:46,035 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:05:46,036 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:05:46,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2021-02-22 01:05:46,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/141a409ec/b9e6139a97f14f2da7ba366b7b56c73f/FLAGf48e3c26b [2021-02-22 01:05:46,837 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:05:46,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2021-02-22 01:05:46,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/141a409ec/b9e6139a97f14f2da7ba366b7b56c73f/FLAGf48e3c26b [2021-02-22 01:05:47,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/141a409ec/b9e6139a97f14f2da7ba366b7b56c73f [2021-02-22 01:05:47,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:05:47,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:05:47,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:05:47,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:05:47,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:05:47,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:47,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529f9725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47, skipping insertion in model container [2021-02-22 01:05:47,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:47,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:05:47,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:05:47,691 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_product64.cil.c[18698,18711] [2021-02-22 01:05:47,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:05:47,707 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:05:47,835 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_product64.cil.c[18698,18711] [2021-02-22 01:05:47,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:05:47,883 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:05:47,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47 WrapperNode [2021-02-22 01:05:47,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:05:47,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:05:47,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:05:47,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:05:47,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:47,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:47,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:47,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:47,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:47,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:47,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (1/1) ... [2021-02-22 01:05:48,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:05:48,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:05:48,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:05:48,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:05:48,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:05:48,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:05:48,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:05:48,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:05:48,121 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:05:48,121 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:05:48,121 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:05:48,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:05:48,122 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:05:48,122 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:05:48,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:05:48,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 01:05:48,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-22 01:05:48,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:05:48,124 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:05:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:05:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:05:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:05:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:05:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:05:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 01:05:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:05:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 01:05:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 01:05:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:05:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:05:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:05:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:05:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:05:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:05:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:05:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 01:05:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:05:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:05:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:05:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:05:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:05:48,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:05:48,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:05:48,132 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:05:48,132 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:05:48,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:05:48,132 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:05:48,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:05:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:05:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:05:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:05:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:05:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:05:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:05:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:05:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:05:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:05:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:05:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:05:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:05:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:05:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:05:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:05:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 01:05:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:05:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:05:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:05:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:05:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:05:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:05:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 01:05:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 01:05:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:05:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:05:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:05:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 01:05:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 01:05:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:05:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-22 01:05:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:05:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:05:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:05:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:05:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:05:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:05:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:05:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:05:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:05:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:05:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:05:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:05:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:05:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:05:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:05:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:05:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:05:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:05:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:05:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:05:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:05:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:05:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:05:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:05:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:05:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:05:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:05:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:05:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:05:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:05:49,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:05:49,423 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:05:49,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:05:49 BoogieIcfgContainer [2021-02-22 01:05:49,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:05:49,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:05:49,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:05:49,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:05:49,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:05:47" (1/3) ... [2021-02-22 01:05:49,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70af03bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:05:49, skipping insertion in model container [2021-02-22 01:05:49,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:47" (2/3) ... [2021-02-22 01:05:49,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70af03bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:05:49, skipping insertion in model container [2021-02-22 01:05:49,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:05:49" (3/3) ... [2021-02-22 01:05:49,435 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2021-02-22 01:05:49,442 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:05:49,447 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:05:49,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:05:49,490 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:05:49,490 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:05:49,490 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:05:49,490 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:05:49,490 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:05:49,490 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:05:49,490 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:05:49,491 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:05:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states. [2021-02-22 01:05:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:05:49,536 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:49,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:05:49,538 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:49,544 INFO L82 PathProgramCache]: Analyzing trace with hash -353660962, now seen corresponding path program 1 times [2021-02-22 01:05:49,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:49,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803238851] [2021-02-22 01:05:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:49,638 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,308 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:50,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:05:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:05:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:05:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:50,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:50,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:50,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803238851] [2021-02-22 01:05:50,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:50,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:05:50,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818133977] [2021-02-22 01:05:50,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:05:50,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:50,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:05:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:05:50,583 INFO L87 Difference]: Start difference. First operand 368 states. Second operand 3 states. [2021-02-22 01:05:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:52,751 INFO L93 Difference]: Finished difference Result 602 states and 716 transitions. [2021-02-22 01:05:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:05:52,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:05:52,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:52,785 INFO L225 Difference]: With dead ends: 602 [2021-02-22 01:05:52,785 INFO L226 Difference]: Without dead ends: 364 [2021-02-22 01:05:52,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:05:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-02-22 01:05:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 316. [2021-02-22 01:05:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2021-02-22 01:05:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 348 transitions. [2021-02-22 01:05:53,059 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 348 transitions. Word has length 158 [2021-02-22 01:05:53,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:53,063 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 348 transitions. [2021-02-22 01:05:53,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:05:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 348 transitions. [2021-02-22 01:05:53,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:05:53,080 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:53,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:05:53,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:05:53,082 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:53,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2140843234, now seen corresponding path program 1 times [2021-02-22 01:05:53,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:53,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620020875] [2021-02-22 01:05:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:53,091 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:53,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,595 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:53,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:05:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:05:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:05:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:53,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:53,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:53,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620020875] [2021-02-22 01:05:53,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:53,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:05:53,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993407878] [2021-02-22 01:05:53,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:05:53,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:53,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:05:53,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:05:53,730 INFO L87 Difference]: Start difference. First operand 316 states and 348 transitions. Second operand 4 states. [2021-02-22 01:05:54,505 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:05:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:56,083 INFO L93 Difference]: Finished difference Result 508 states and 578 transitions. [2021-02-22 01:05:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:05:56,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:05:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:56,088 INFO L225 Difference]: With dead ends: 508 [2021-02-22 01:05:56,088 INFO L226 Difference]: Without dead ends: 347 [2021-02-22 01:05:56,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:05:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-22 01:05:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 306. [2021-02-22 01:05:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2021-02-22 01:05:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 335 transitions. [2021-02-22 01:05:56,204 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 335 transitions. Word has length 159 [2021-02-22 01:05:56,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:56,205 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 335 transitions. [2021-02-22 01:05:56,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:05:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 335 transitions. [2021-02-22 01:05:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-22 01:05:56,208 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:56,208 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] [2021-02-22 01:05:56,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:05:56,209 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:56,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1125048418, now seen corresponding path program 1 times [2021-02-22 01:05:56,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:56,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202762562] [2021-02-22 01:05:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:56,214 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:56,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:56,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:05:56,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,661 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:56,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:05:56,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:05:56,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:05:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:05:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:05:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:05:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:56,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:56,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:56,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202762562] [2021-02-22 01:05:56,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:56,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:05:56,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895533519] [2021-02-22 01:05:56,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:05:56,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:56,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:05:56,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:05:56,831 INFO L87 Difference]: Start difference. First operand 306 states and 335 transitions. Second operand 10 states. [2021-02-22 01:05:57,515 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:57,952 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:05:58,325 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 01:05:58,699 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:59,071 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:59,433 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:06:00,466 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:06:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:06:04,172 INFO L93 Difference]: Finished difference Result 862 states and 1007 transitions. [2021-02-22 01:06:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:06:04,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-22 01:06:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:06:04,179 INFO L225 Difference]: With dead ends: 862 [2021-02-22 01:06:04,179 INFO L226 Difference]: Without dead ends: 671 [2021-02-22 01:06:04,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:06:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-02-22 01:06:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 568. [2021-02-22 01:06:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2021-02-22 01:06:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 641 transitions. [2021-02-22 01:06:04,439 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 641 transitions. Word has length 172 [2021-02-22 01:06:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:06:04,441 INFO L480 AbstractCegarLoop]: Abstraction has 568 states and 641 transitions. [2021-02-22 01:06:04,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:06:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 641 transitions. [2021-02-22 01:06:04,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-22 01:06:04,446 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:06:04,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:06:04,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:06:04,447 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:06:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:06:04,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1543091679, now seen corresponding path program 1 times [2021-02-22 01:06:04,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:06:04,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763118203] [2021-02-22 01:06:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:06:04,454 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:06:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:04,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:04,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:04,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:04,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:04,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:04,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:04,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:04,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:04,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:04,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:04,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:04,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:04,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:04,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:04,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:04,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:04,925 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:06:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:06:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:06:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:06:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:06:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:06:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:06:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:06:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:06:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-22 01:06:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:05,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:05,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-22 01:06:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:05,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:05,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:06:05,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763118203] [2021-02-22 01:06:05,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:06:05,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:06:05,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457642273] [2021-02-22 01:06:05,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:06:05,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:06:05,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:06:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:06:05,162 INFO L87 Difference]: Start difference. First operand 568 states and 641 transitions. Second operand 9 states. [2021-02-22 01:06:05,745 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:06:08,155 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:06:08,610 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:06:09,088 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:06:09,542 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:06:09,899 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:06:10,284 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:06:10,637 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:06:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:06:12,254 INFO L93 Difference]: Finished difference Result 1572 states and 1896 transitions. [2021-02-22 01:06:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:06:12,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-22 01:06:12,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:06:12,264 INFO L225 Difference]: With dead ends: 1572 [2021-02-22 01:06:12,264 INFO L226 Difference]: Without dead ends: 1119 [2021-02-22 01:06:12,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:06:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-02-22 01:06:12,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1008. [2021-02-22 01:06:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2021-02-22 01:06:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1164 transitions. [2021-02-22 01:06:12,749 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1164 transitions. Word has length 177 [2021-02-22 01:06:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:06:12,750 INFO L480 AbstractCegarLoop]: Abstraction has 1008 states and 1164 transitions. [2021-02-22 01:06:12,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:06:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1164 transitions. [2021-02-22 01:06:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:06:12,756 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:06:12,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:06:12,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:06:12,756 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:06:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:06:12,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1490946969, now seen corresponding path program 1 times [2021-02-22 01:06:12,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:06:12,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654160129] [2021-02-22 01:06:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:06:12,760 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:06:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:12,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:12,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:12,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:12,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:12,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:12,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:12,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:12,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:12,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:12,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:12,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:12,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:12,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:12,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,122 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:06:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:06:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:06:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:06:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:06:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:06:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:06:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:06:13,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:06:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:06:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:06:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-22 01:06:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:06:13,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:06:13,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:06:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:06:13,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654160129] [2021-02-22 01:06:13,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:06:13,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:06:13,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749788122] [2021-02-22 01:06:13,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:06:13,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:06:13,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:06:13,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:06:13,301 INFO L87 Difference]: Start difference. First operand 1008 states and 1164 transitions. Second operand 6 states. [2021-02-22 01:06:13,882 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:06:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:06:16,920 INFO L93 Difference]: Finished difference Result 2258 states and 2721 transitions. [2021-02-22 01:06:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:06:16,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-22 01:06:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:06:16,929 INFO L225 Difference]: With dead ends: 2258 [2021-02-22 01:06:16,929 INFO L226 Difference]: Without dead ends: 1365 [2021-02-22 01:06:16,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:06:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-02-22 01:06:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1265. [2021-02-22 01:06:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2021-02-22 01:06:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1440 transitions. [2021-02-22 01:06:17,423 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1440 transitions. Word has length 182 [2021-02-22 01:06:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:06:17,424 INFO L480 AbstractCegarLoop]: Abstraction has 1265 states and 1440 transitions. [2021-02-22 01:06:17,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:06:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1440 transitions. [2021-02-22 01:06:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:06:17,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:06:17,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:06:17,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:06:17,429 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:06:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:06:17,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2131034746, now seen corresponding path program 1 times [2021-02-22 01:06:17,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:06:17,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110423646] [2021-02-22 01:06:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:06:17,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:06:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:06:17,503 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:06:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:06:17,573 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:06:17,753 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:06:17,754 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:06:17,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:06:17,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:06:17 BoogieIcfgContainer [2021-02-22 01:06:17,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:06:17,778 INFO L168 Benchmark]: Toolchain (without parser) took 30636.17 ms. Allocated memory was 175.1 MB in the beginning and 784.3 MB in the end (delta: 609.2 MB). Free memory was 157.5 MB in the beginning and 491.0 MB in the end (delta: -333.5 MB). Peak memory consumption was 275.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:06:17,779 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 175.1 MB. Free memory is still 148.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:06:17,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.47 ms. Allocated memory is still 175.1 MB. Free memory was 156.5 MB in the beginning and 149.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:06:17,780 INFO L168 Benchmark]: Boogie Preprocessor took 116.31 ms. Allocated memory is still 175.1 MB. Free memory was 149.1 MB in the beginning and 145.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:06:17,780 INFO L168 Benchmark]: RCFGBuilder took 1423.96 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 145.2 MB in the beginning and 186.3 MB in the end (delta: -41.1 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:06:17,781 INFO L168 Benchmark]: TraceAbstraction took 28349.56 ms. Allocated memory was 210.8 MB in the beginning and 784.3 MB in the end (delta: 573.6 MB). Free memory was 185.8 MB in the beginning and 491.0 MB in the end (delta: -305.2 MB). Peak memory consumption was 268.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:06:17,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 175.1 MB. Free memory is still 148.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 723.47 ms. Allocated memory is still 175.1 MB. Free memory was 156.5 MB in the beginning and 149.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 116.31 ms. Allocated memory is still 175.1 MB. Free memory was 149.1 MB in the beginning and 145.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1423.96 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 145.2 MB in the beginning and 186.3 MB in the end (delta: -41.1 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28349.56 ms. Allocated memory was 210.8 MB in the beginning and 784.3 MB in the end (delta: 573.6 MB). Free memory was 185.8 MB in the beginning and 491.0 MB in the end (delta: -305.2 MB). Peak memory consumption was 268.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 998]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L92] int pumpRunning = 0; [L93] int systemActive = 1; [L429] int waterLevel = 1; [L430] int methaneLevelCritical = 0; [L701] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L898] int cleanupTimeShifts = 4; [L971] int retValue_acc ; [L972] int tmp ; [L976] FCALL select_helpers() [L977] FCALL select_features() [L978] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L978] RET, EXPR valid_product() [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) [L982] FCALL setup() [L983] CALL runTest() [L965] CALL test() [L360] int splverifierCounter ; [L361] int tmp ; [L362] int tmp___0 ; [L363] int tmp___1 ; [L364] int tmp___2 ; [L367] splverifierCounter = 0 [L369] COND TRUE 1 [L371] COND TRUE splverifierCounter < 4 [L377] tmp = __VERIFIER_nondet_int() [L379] COND TRUE \read(tmp) [L381] CALL waterRise() [L447] COND TRUE waterLevel < 2 [L448] waterLevel = waterLevel + 1 [L381] RET waterRise() [L387] tmp___0 = __VERIFIER_nondet_int() [L389] COND FALSE !(\read(tmp___0)) [L397] tmp___2 = __VERIFIER_nondet_int() [L399] COND FALSE !(\read(tmp___2)) [L405] tmp___1 = __VERIFIER_nondet_int() [L407] COND TRUE \read(tmp___1) [L409] CALL stopSystem() [L336] COND FALSE !(\read(pumpRunning)) [L343] systemActive = 0 [L409] RET stopSystem() [L416] CALL timeShift() [L100] COND FALSE !(\read(pumpRunning)) [L107] COND FALSE !(\read(systemActive)) [L115] CALL __utac_acc__Specification3_spec__1() [L1004] int tmp ; [L1005] int tmp___0 ; [L1006] int tmp___1 ; [L1010] CALL, EXPR isMethaneLevelCritical() [L468] int retValue_acc ; [L471] retValue_acc = methaneLevelCritical [L472] return (retValue_acc); [L1010] RET, EXPR isMethaneLevelCritical() [L1010] tmp = isMethaneLevelCritical() [L1012] COND FALSE !(\read(tmp)) [L1016] CALL, EXPR getWaterLevel() [L500] int retValue_acc ; [L503] retValue_acc = waterLevel [L504] return (retValue_acc); [L1016] RET, EXPR getWaterLevel() [L1016] tmp___0 = getWaterLevel() [L1018] COND TRUE tmp___0 == 2 [L1020] CALL, EXPR isPumpRunning() [L250] int retValue_acc ; [L253] retValue_acc = pumpRunning [L254] return (retValue_acc); [L1020] RET, EXPR isPumpRunning() [L1020] tmp___1 = isPumpRunning() [L1022] COND FALSE !(\read(tmp___1)) [L1026] CALL __automaton_fail() [L998] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 45 procedures, 683 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1508 SDtfs, 2605 SDslu, 1734 SDs, 0 SdLazy, 4506 SolverSat, 948 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1265occurred 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, 403 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...