/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product08.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:21:49,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:21:49,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:21:49,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:21:49,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:21:49,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:21:49,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:21:49,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:21:49,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:21:49,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:21:49,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:21:49,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:21:49,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:21:49,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:21:49,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:21:49,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:21:49,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:21:49,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:21:49,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:21:49,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:21:49,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:21:49,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:21:49,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:21:49,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:21:49,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:21:49,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:21:49,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:21:49,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:21:49,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:21:49,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:21:49,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:21:49,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:21:49,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:21:49,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:21:49,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:21:49,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:21:49,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:21:49,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:21:49,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:21:49,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:21:49,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:21:49,432 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:21:49,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:21:49,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:21:49,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:21:49,446 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:21:49,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:21:49,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:21:49,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:21:49,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:21:49,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:21:49,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:21:49,448 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:21:49,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:21:49,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:21:49,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:21:49,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:21:49,450 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:21:49,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:21:49,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:21:49,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:21:49,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:21:49,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:21:49,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:21:49,452 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:21:49,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:21:49,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:21:49,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:21:49,916 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:21:49,917 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:21:49,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product08.cil.c [2021-02-23 16:21:49,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5402c78cd/99588ac2813c4e789ee90d5f87cb7698/FLAG3f2b38c18 [2021-02-23 16:21:50,726 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:21:50,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product08.cil.c [2021-02-23 16:21:50,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5402c78cd/99588ac2813c4e789ee90d5f87cb7698/FLAG3f2b38c18 [2021-02-23 16:21:50,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5402c78cd/99588ac2813c4e789ee90d5f87cb7698 [2021-02-23 16:21:50,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:21:50,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:21:50,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:21:50,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:21:50,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:21:50,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:21:50" (1/1) ... [2021-02-23 16:21:50,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a08503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:50, skipping insertion in model container [2021-02-23 16:21:50,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:21:50" (1/1) ... [2021-02-23 16:21:50,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:21:51,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:21:51,370 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_product08.cil.c[12695,12708] [2021-02-23 16:21:51,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:21:51,414 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:21:51,482 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_product08.cil.c[12695,12708] [2021-02-23 16:21:51,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:21:51,572 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:21:51,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51 WrapperNode [2021-02-23 16:21:51,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:21:51,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:21:51,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:21:51,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:21:51,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (1/1) ... [2021-02-23 16:21:51,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (1/1) ... [2021-02-23 16:21:51,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (1/1) ... [2021-02-23 16:21:51,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (1/1) ... [2021-02-23 16:21:51,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (1/1) ... [2021-02-23 16:21:51,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (1/1) ... [2021-02-23 16:21:51,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (1/1) ... [2021-02-23 16:21:51,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:21:51,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:21:51,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:21:51,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:21:51,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:21:51,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:21:51,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:21:51,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:21:51,806 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:21:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:21:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:21:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:21:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:21:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:21:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:21:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:21:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:21:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:21:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:21:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:21:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:21:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:21:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:21:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:21:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:21:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:21:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:21:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:21:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:21:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:21:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:21:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:21:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:21:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:21:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:21:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:21:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:21:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:21:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:21:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:21:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:21:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:21:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:21:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:21:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:21:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:21:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:21:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:21:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:21:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:21:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:21:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:21:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:21:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:21:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:21:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:21:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:21:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:21:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:21:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:21:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:21:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:21:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:21:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:21:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:21:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:21:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:21:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:21:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:21:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:21:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:21:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:21:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:21:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:21:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:21:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:21:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:21:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:21:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:21:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:21:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:21:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:21:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:21:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:21:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:21:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:21:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:21:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:21:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:21:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:21:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:21:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:21:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:21:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:21:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:21:53,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:21:53,331 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:21:53,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:21:53 BoogieIcfgContainer [2021-02-23 16:21:53,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:21:53,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:21:53,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:21:53,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:21:53,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:21:50" (1/3) ... [2021-02-23 16:21:53,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ce2ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:21:53, skipping insertion in model container [2021-02-23 16:21:53,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:51" (2/3) ... [2021-02-23 16:21:53,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ce2ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:21:53, skipping insertion in model container [2021-02-23 16:21:53,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:21:53" (3/3) ... [2021-02-23 16:21:53,353 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product08.cil.c [2021-02-23 16:21:53,364 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:21:53,370 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:21:53,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:21:53,414 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:21:53,414 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:21:53,414 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:21:53,414 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:21:53,414 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:21:53,415 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:21:53,415 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:21:53,415 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:21:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-23 16:21:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:21:53,458 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:53,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:21:53,460 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:53,466 INFO L82 PathProgramCache]: Analyzing trace with hash -845316587, now seen corresponding path program 1 times [2021-02-23 16:21:53,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:53,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653717625] [2021-02-23 16:21:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:53,563 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:53,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:53,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:53,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:53,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,350 WARN L202 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:21:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:21:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:54,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:54,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:21:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:54,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:54,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:21:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:54,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:54,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:21:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:54,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:54,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:21:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:54,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:54,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:21:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:54,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:54,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:21:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:54,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:54,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:21:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:54,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:54,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:21:54,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653717625] [2021-02-23 16:21:54,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:21:54,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:21:54,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151416005] [2021-02-23 16:21:54,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:21:54,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:21:54,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:21:54,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:21:54,693 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-23 16:21:56,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:21:56,356 INFO L93 Difference]: Finished difference Result 442 states and 530 transitions. [2021-02-23 16:21:56,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:21:56,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:21:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:21:56,375 INFO L225 Difference]: With dead ends: 442 [2021-02-23 16:21:56,375 INFO L226 Difference]: Without dead ends: 281 [2021-02-23 16:21:56,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:21:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-23 16:21:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2021-02-23 16:21:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-23 16:21:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 259 transitions. [2021-02-23 16:21:56,583 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 259 transitions. Word has length 158 [2021-02-23 16:21:56,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:21:56,586 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 259 transitions. [2021-02-23 16:21:56,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:21:56,586 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 259 transitions. [2021-02-23 16:21:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:21:56,599 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:56,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:21:56,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:21:56,600 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1852035926, now seen corresponding path program 1 times [2021-02-23 16:21:56,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:56,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331093205] [2021-02-23 16:21:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:56,609 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:56,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:56,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:56,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:56,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:56,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:56,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,156 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:21:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:21:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:57,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:57,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:21:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:57,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:57,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:21:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:57,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:57,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:21:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:57,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:57,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:21:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:57,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:57,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:21:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:57,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:57,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:21:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:57,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:57,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:21:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:57,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:57,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:21:57,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331093205] [2021-02-23 16:21:57,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:21:57,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:21:57,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693958022] [2021-02-23 16:21:57,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:21:57,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:21:57,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:21:57,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:21:57,301 INFO L87 Difference]: Start difference. First operand 239 states and 259 transitions. Second operand 4 states. [2021-02-23 16:21:58,051 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:21:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:21:58,962 INFO L93 Difference]: Finished difference Result 348 states and 392 transitions. [2021-02-23 16:21:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:21:58,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:21:58,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:21:58,967 INFO L225 Difference]: With dead ends: 348 [2021-02-23 16:21:58,968 INFO L226 Difference]: Without dead ends: 264 [2021-02-23 16:21:58,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:21:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-23 16:21:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2021-02-23 16:21:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 16:21:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 246 transitions. [2021-02-23 16:21:59,059 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 246 transitions. Word has length 159 [2021-02-23 16:21:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:21:59,060 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 246 transitions. [2021-02-23 16:21:59,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:21:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 246 transitions. [2021-02-23 16:21:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:21:59,063 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:59,063 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] [2021-02-23 16:21:59,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:21:59,063 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:59,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:59,064 INFO L82 PathProgramCache]: Analyzing trace with hash 345072707, now seen corresponding path program 1 times [2021-02-23 16:21:59,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:59,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465994982] [2021-02-23 16:21:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:59,068 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:59,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:59,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:21:59,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,500 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:21:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:21:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:21:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:21:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:21:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:21:59,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:21:59,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:21:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:21:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:21:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:21:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:21:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:59,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:59,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:21:59,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465994982] [2021-02-23 16:21:59,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:21:59,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:21:59,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269525429] [2021-02-23 16:21:59,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:21:59,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:21:59,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:21:59,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:21:59,688 INFO L87 Difference]: Start difference. First operand 229 states and 246 transitions. Second operand 10 states. [2021-02-23 16:22:00,318 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:00,794 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:22:01,182 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:22:01,583 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:01,939 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:02,297 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:03,351 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:22:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:05,658 INFO L93 Difference]: Finished difference Result 619 states and 724 transitions. [2021-02-23 16:22:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:22:05,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:22:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:05,667 INFO L225 Difference]: With dead ends: 619 [2021-02-23 16:22:05,667 INFO L226 Difference]: Without dead ends: 505 [2021-02-23 16:22:05,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:22:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-02-23 16:22:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 414. [2021-02-23 16:22:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2021-02-23 16:22:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 463 transitions. [2021-02-23 16:22:05,876 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 463 transitions. Word has length 172 [2021-02-23 16:22:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:05,877 INFO L480 AbstractCegarLoop]: Abstraction has 414 states and 463 transitions. [2021-02-23 16:22:05,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:22:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 463 transitions. [2021-02-23 16:22:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:22:05,881 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:05,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:22:05,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:22:05,881 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:05,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:05,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2043508278, now seen corresponding path program 1 times [2021-02-23 16:22:05,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:05,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889517074] [2021-02-23 16:22:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:05,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:05,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:05,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:05,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:05,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:05,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:05,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:05,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:05,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:05,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:05,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:05,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:05,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:05,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:05,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:05,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:05,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,304 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:22:06,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:22:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:22:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-23 16:22:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:06,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-23 16:22:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:06,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:06,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:06,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889517074] [2021-02-23 16:22:06,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:06,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:22:06,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052268259] [2021-02-23 16:22:06,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:22:06,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:06,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:22:06,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:22:06,480 INFO L87 Difference]: Start difference. First operand 414 states and 463 transitions. Second operand 9 states. [2021-02-23 16:22:07,252 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:09,249 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:09,674 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:10,122 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:10,565 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:10,957 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:11,344 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:11,684 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:12,570 INFO L93 Difference]: Finished difference Result 1090 states and 1320 transitions. [2021-02-23 16:22:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:22:12,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-23 16:22:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:12,577 INFO L225 Difference]: With dead ends: 1090 [2021-02-23 16:22:12,578 INFO L226 Difference]: Without dead ends: 791 [2021-02-23 16:22:12,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:22:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-02-23 16:22:12,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 692. [2021-02-23 16:22:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2021-02-23 16:22:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 798 transitions. [2021-02-23 16:22:12,899 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 798 transitions. Word has length 177 [2021-02-23 16:22:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:12,899 INFO L480 AbstractCegarLoop]: Abstraction has 692 states and 798 transitions. [2021-02-23 16:22:12,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:22:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 798 transitions. [2021-02-23 16:22:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:22:12,904 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:12,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:22:12,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:22:12,905 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash 714541325, now seen corresponding path program 1 times [2021-02-23 16:22:12,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:12,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039893685] [2021-02-23 16:22:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:12,909 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:12,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:12,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:12,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:12,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:12,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:12,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:12,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:12,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:12,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:12,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:12,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:12,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:12,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:12,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,285 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:13,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:13,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:22:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:13,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:22:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:22:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:22:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-23 16:22:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:13,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:13,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:13,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039893685] [2021-02-23 16:22:13,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:13,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:22:13,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403639524] [2021-02-23 16:22:13,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:22:13,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:13,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:22:13,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:22:13,433 INFO L87 Difference]: Start difference. First operand 692 states and 798 transitions. Second operand 6 states. [2021-02-23 16:22:14,052 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:15,339 INFO L93 Difference]: Finished difference Result 1209 states and 1450 transitions. [2021-02-23 16:22:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:22:15,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-23 16:22:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:15,349 INFO L225 Difference]: With dead ends: 1209 [2021-02-23 16:22:15,349 INFO L226 Difference]: Without dead ends: 632 [2021-02-23 16:22:15,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:22:15,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-02-23 16:22:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 555. [2021-02-23 16:22:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2021-02-23 16:22:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 606 transitions. [2021-02-23 16:22:15,584 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 606 transitions. Word has length 182 [2021-02-23 16:22:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:15,585 INFO L480 AbstractCegarLoop]: Abstraction has 555 states and 606 transitions. [2021-02-23 16:22:15,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:22:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 606 transitions. [2021-02-23 16:22:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:22:15,588 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:15,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:22:15,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:22:15,589 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:15,590 INFO L82 PathProgramCache]: Analyzing trace with hash -92564613, now seen corresponding path program 1 times [2021-02-23 16:22:15,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:15,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191520894] [2021-02-23 16:22:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:15,593 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:22:15,682 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:22:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:22:15,754 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:22:15,976 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:22:15,976 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:22:15,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:22:16,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:22:16 BoogieIcfgContainer [2021-02-23 16:22:16,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:22:16,003 INFO L168 Benchmark]: Toolchain (without parser) took 25059.24 ms. Allocated memory was 173.0 MB in the beginning and 486.5 MB in the end (delta: 313.5 MB). Free memory was 147.7 MB in the beginning and 251.0 MB in the end (delta: -103.3 MB). Peak memory consumption was 211.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:16,004 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 173.0 MB. Free memory was 146.3 MB in the beginning and 146.2 MB in the end (delta: 100.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:22:16,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.45 ms. Allocated memory is still 173.0 MB. Free memory was 146.6 MB in the beginning and 126.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:16,005 INFO L168 Benchmark]: Boogie Preprocessor took 95.61 ms. Allocated memory is still 173.0 MB. Free memory was 126.5 MB in the beginning and 122.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:16,005 INFO L168 Benchmark]: RCFGBuilder took 1663.95 ms. Allocated memory was 173.0 MB in the beginning and 210.8 MB in the end (delta: 37.7 MB). Free memory was 122.7 MB in the beginning and 147.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:16,006 INFO L168 Benchmark]: TraceAbstraction took 22657.98 ms. Allocated memory was 210.8 MB in the beginning and 486.5 MB in the end (delta: 275.8 MB). Free memory was 146.5 MB in the beginning and 251.0 MB in the end (delta: -104.5 MB). Peak memory consumption was 171.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:16,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 173.0 MB. Free memory was 146.3 MB in the beginning and 146.2 MB in the end (delta: 100.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 609.45 ms. Allocated memory is still 173.0 MB. Free memory was 146.6 MB in the beginning and 126.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.61 ms. Allocated memory is still 173.0 MB. Free memory was 126.5 MB in the beginning and 122.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1663.95 ms. Allocated memory was 173.0 MB in the beginning and 210.8 MB in the end (delta: 37.7 MB). Free memory was 122.7 MB in the beginning and 147.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22657.98 ms. Allocated memory was 210.8 MB in the beginning and 486.5 MB in the end (delta: 275.8 MB). Free memory was 146.5 MB in the beginning and 251.0 MB in the end (delta: -104.5 MB). Peak memory consumption was 171.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 534]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L615] int pumpRunning = 0; [L616] int systemActive = 1; [L809] int cleanupTimeShifts = 4; [L882] int retValue_acc ; [L883] int tmp ; [L887] FCALL select_helpers() [L888] FCALL select_features() [L889] CALL, EXPR valid_product() [L800] int retValue_acc ; [L803] retValue_acc = 1 [L804] return (retValue_acc); [L889] RET, EXPR valid_product() [L889] tmp = valid_product() [L891] COND TRUE \read(tmp) [L893] FCALL setup() [L894] CALL runTest() [L876] CALL test() [L544] int splverifierCounter ; [L545] int tmp ; [L546] int tmp___0 ; [L547] int tmp___1 ; [L548] int tmp___2 ; [L551] splverifierCounter = 0 [L553] COND TRUE 1 [L555] COND TRUE splverifierCounter < 4 [L561] tmp = __VERIFIER_nondet_int() [L563] COND TRUE \read(tmp) [L565] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L565] RET waterRise() [L571] tmp___0 = __VERIFIER_nondet_int() [L573] COND FALSE !(\read(tmp___0)) [L581] tmp___2 = __VERIFIER_nondet_int() [L583] COND FALSE !(\read(tmp___2)) [L589] tmp___1 = __VERIFIER_nondet_int() [L591] COND TRUE \read(tmp___1) [L593] CALL stopSystem() [L751] COND FALSE !(\read(pumpRunning)) [L758] systemActive = 0 [L593] RET stopSystem() [L600] CALL timeShift() [L622] COND FALSE !(\read(pumpRunning)) [L629] COND FALSE !(\read(systemActive)) [L637] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L521] int retValue_acc ; [L524] retValue_acc = waterLevel [L525] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L703] int retValue_acc ; [L706] retValue_acc = pumpRunning [L707] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L534] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 609 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1120 SDtfs, 1683 SDslu, 1592 SDs, 0 SdLazy, 3029 SolverSat, 594 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=692occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 344 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...