/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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:57:13,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:57:13,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:57:13,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:57:13,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:57:13,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:57:13,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:57:13,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:57:13,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:57:13,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:57:13,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:57:13,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:57:13,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:57:13,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:57:13,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:57:13,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:57:13,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:57:13,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:57:13,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:57:13,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:57:13,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:57:13,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:57:13,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:57:13,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:57:13,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:57:13,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:57:13,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:57:13,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:57:13,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:57:13,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:57:13,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:57:13,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:57:13,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:57:13,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:57:13,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:57:13,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:57:13,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:57:13,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:57:13,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:57:13,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:57:13,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:57:13,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:57:13,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:57:13,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:57:13,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:57:13,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:57:13,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:57:13,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:57:13,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:57:13,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:57:13,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:57:13,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:57:13,618 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:57:13,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:57:13,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:57:13,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:57:13,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:57:13,619 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:57:13,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:57:13,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:57:13,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:57:13,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:57:13,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:57:13,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:57:13,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:57:13,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:57:14,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:57:14,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:57:14,033 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:57:14,034 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:57:14,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2021-02-21 18:57:14,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa60e7072/57dac5e839b84c5186c48bd10ce390d0/FLAGe85485cae [2021-02-21 18:57:14,770 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:57:14,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2021-02-21 18:57:14,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa60e7072/57dac5e839b84c5186c48bd10ce390d0/FLAGe85485cae [2021-02-21 18:57:15,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa60e7072/57dac5e839b84c5186c48bd10ce390d0 [2021-02-21 18:57:15,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:57:15,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:57:15,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:15,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:57:15,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:57:15,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cfbc39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15, skipping insertion in model container [2021-02-21 18:57:15,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:57:15,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:57:15,473 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_product20.cil.c[17631,17644] [2021-02-21 18:57:15,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:57:15,492 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:57:15,610 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_product20.cil.c[17631,17644] [2021-02-21 18:57:15,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:57:15,672 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:57:15,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15 WrapperNode [2021-02-21 18:57:15,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:15,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:57:15,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:57:15,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:57:15,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:57:15,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:57:15,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:57:15,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:57:15,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (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 [2021-02-21 18:57:15,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:57:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:57:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:57:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:57:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:57:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:57:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:57:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:57:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:57:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:57:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:57:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:57:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:57:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:57:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:57:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:57:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:57:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:57:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:57:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:57:15,989 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:57:15,990 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:57:15,990 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:57:15,990 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:57:15,990 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:57:15,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:57:15,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:57:15,991 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:57:15,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:57:15,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:57:15,992 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:57:15,992 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:57:15,992 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:57:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:57:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:57:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:57:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:57:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:57:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:57:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:57:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:57:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:57:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:57:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:57:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:57:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:57:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:57:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:57:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:57:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:57:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:57:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:57:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:57:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:57:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:57:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:57:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:57:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:57:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:57:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:57:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:57:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:57:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:57:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:57:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:57:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:57:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:57:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:57:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:57:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:57:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:57:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:57:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:57:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:57:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:57:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:57:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:57:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:57:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:57:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:57:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:57:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:57:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:57:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:57:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:57:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:57:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:57:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:57:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:57:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:57:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:57:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:57:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:57:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:57:17,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:57:17,590 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:57:17,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:57:17 BoogieIcfgContainer [2021-02-21 18:57:17,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:57:17,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:57:17,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:57:17,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:57:17,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:57:15" (1/3) ... [2021-02-21 18:57:17,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e513ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:57:17, skipping insertion in model container [2021-02-21 18:57:17,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15" (2/3) ... [2021-02-21 18:57:17,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e513ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:57:17, skipping insertion in model container [2021-02-21 18:57:17,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:57:17" (3/3) ... [2021-02-21 18:57:17,607 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2021-02-21 18:57:17,613 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:57:17,619 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:57:17,637 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:57:17,662 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:57:17,662 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:57:17,663 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:57:17,663 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:57:17,663 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:57:17,663 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:57:17,663 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:57:17,663 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:57:17,687 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2021-02-21 18:57:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:57:17,710 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:17,712 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] [2021-02-21 18:57:17,712 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:17,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:17,719 INFO L82 PathProgramCache]: Analyzing trace with hash -845332211, now seen corresponding path program 1 times [2021-02-21 18:57:17,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:17,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705803186] [2021-02-21 18:57:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:17,807 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,748 WARN L202 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:18,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:57:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:57:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:57:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:18,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705803186] [2021-02-21 18:57:18,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:18,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:57:18,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000571402] [2021-02-21 18:57:19,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:57:19,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:57:19,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:57:19,018 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 3 states. [2021-02-21 18:57:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:20,638 INFO L93 Difference]: Finished difference Result 464 states and 552 transitions. [2021-02-21 18:57:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:57:20,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:57:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:20,657 INFO L225 Difference]: With dead ends: 464 [2021-02-21 18:57:20,658 INFO L226 Difference]: Without dead ends: 292 [2021-02-21 18:57:20,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:57:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-21 18:57:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 250. [2021-02-21 18:57:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-21 18:57:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2021-02-21 18:57:20,814 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 158 [2021-02-21 18:57:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:20,815 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2021-02-21 18:57:20,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:57:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2021-02-21 18:57:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:57:20,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:20,821 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] [2021-02-21 18:57:20,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:57:20,822 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:20,823 INFO L82 PathProgramCache]: Analyzing trace with hash -284761496, now seen corresponding path program 1 times [2021-02-21 18:57:20,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:20,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599256256] [2021-02-21 18:57:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:20,828 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:20,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:20,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:20,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:20,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:20,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:20,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,293 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:57:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:57:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:57:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:21,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599256256] [2021-02-21 18:57:21,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:21,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:57:21,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967887654] [2021-02-21 18:57:21,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:57:21,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:21,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:57:21,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:57:21,408 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 4 states. [2021-02-21 18:57:22,197 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:57:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:23,158 INFO L93 Difference]: Finished difference Result 370 states and 414 transitions. [2021-02-21 18:57:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:57:23,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:57:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:23,164 INFO L225 Difference]: With dead ends: 370 [2021-02-21 18:57:23,164 INFO L226 Difference]: Without dead ends: 275 [2021-02-21 18:57:23,166 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 [2021-02-21 18:57:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-02-21 18:57:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 240. [2021-02-21 18:57:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-21 18:57:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 257 transitions. [2021-02-21 18:57:23,303 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 257 transitions. Word has length 159 [2021-02-21 18:57:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:23,303 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 257 transitions. [2021-02-21 18:57:23,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:57:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 257 transitions. [2021-02-21 18:57:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:57:23,307 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:23,307 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] [2021-02-21 18:57:23,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:57:23,308 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1998728577, now seen corresponding path program 1 times [2021-02-21 18:57:23,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:23,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491467547] [2021-02-21 18:57:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:23,313 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:23,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:23,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:57:23,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,764 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:23,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:57:23,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:57:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:57:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:23,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:57:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:57:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:57:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:23,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491467547] [2021-02-21 18:57:23,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:23,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:57:23,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020797328] [2021-02-21 18:57:23,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:57:23,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:57:23,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:57:23,964 INFO L87 Difference]: Start difference. First operand 240 states and 257 transitions. Second operand 10 states. [2021-02-21 18:57:24,581 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:25,030 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:57:25,411 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:57:25,794 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:26,135 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:26,515 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:27,628 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:57:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:30,052 INFO L93 Difference]: Finished difference Result 652 states and 757 transitions. [2021-02-21 18:57:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:57:30,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:57:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:30,059 INFO L225 Difference]: With dead ends: 652 [2021-02-21 18:57:30,059 INFO L226 Difference]: Without dead ends: 527 [2021-02-21 18:57:30,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:57:30,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-02-21 18:57:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 436. [2021-02-21 18:57:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2021-02-21 18:57:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 485 transitions. [2021-02-21 18:57:30,278 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 485 transitions. Word has length 172 [2021-02-21 18:57:30,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:30,279 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 485 transitions. [2021-02-21 18:57:30,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:57:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 485 transitions. [2021-02-21 18:57:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:57:30,283 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:30,283 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] [2021-02-21 18:57:30,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:57:30,284 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:30,284 INFO L82 PathProgramCache]: Analyzing trace with hash 441005700, now seen corresponding path program 1 times [2021-02-21 18:57:30,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:30,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836043418] [2021-02-21 18:57:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:30,288 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,769 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:30,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:57:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:57:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:57:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 18:57:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:30,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 18:57:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:30,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:30,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:30,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836043418] [2021-02-21 18:57:30,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:30,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:57:30,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470889213] [2021-02-21 18:57:30,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:57:30,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:57:30,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:57:30,934 INFO L87 Difference]: Start difference. First operand 436 states and 485 transitions. Second operand 9 states. [2021-02-21 18:57:31,640 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:33,593 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:33,996 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:34,405 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:34,834 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:35,224 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:35,622 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:35,972 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:36,868 INFO L93 Difference]: Finished difference Result 1156 states and 1386 transitions. [2021-02-21 18:57:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:57:36,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 18:57:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:36,877 INFO L225 Difference]: With dead ends: 1156 [2021-02-21 18:57:36,877 INFO L226 Difference]: Without dead ends: 835 [2021-02-21 18:57:36,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:57:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-02-21 18:57:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 736. [2021-02-21 18:57:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2021-02-21 18:57:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 842 transitions. [2021-02-21 18:57:37,241 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 842 transitions. Word has length 177 [2021-02-21 18:57:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:37,242 INFO L480 AbstractCegarLoop]: Abstraction has 736 states and 842 transitions. [2021-02-21 18:57:37,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:57:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 842 transitions. [2021-02-21 18:57:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:57:37,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:37,247 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] [2021-02-21 18:57:37,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:57:37,248 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:37,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1949426795, now seen corresponding path program 1 times [2021-02-21 18:57:37,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:37,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189515030] [2021-02-21 18:57:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:37,252 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:37,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:37,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:37,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:37,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:37,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:37,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,638 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:37,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:37,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:57:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:57:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:57:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:57:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 18:57:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:37,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:37,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:37,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189515030] [2021-02-21 18:57:37,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:37,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:57:37,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582409837] [2021-02-21 18:57:37,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:57:37,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:37,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:57:37,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:57:37,783 INFO L87 Difference]: Start difference. First operand 736 states and 842 transitions. Second operand 6 states. [2021-02-21 18:57:38,416 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:39,696 INFO L93 Difference]: Finished difference Result 1253 states and 1494 transitions. [2021-02-21 18:57:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 18:57:39,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 18:57:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:39,701 INFO L225 Difference]: With dead ends: 1253 [2021-02-21 18:57:39,702 INFO L226 Difference]: Without dead ends: 632 [2021-02-21 18:57:39,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:57:39,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-02-21 18:57:40,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 555. [2021-02-21 18:57:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2021-02-21 18:57:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 606 transitions. [2021-02-21 18:57:40,021 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 606 transitions. Word has length 182 [2021-02-21 18:57:40,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:40,022 INFO L480 AbstractCegarLoop]: Abstraction has 555 states and 606 transitions. [2021-02-21 18:57:40,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:57:40,022 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 606 transitions. [2021-02-21 18:57:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:57:40,027 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:40,027 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] [2021-02-21 18:57:40,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:57:40,028 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:40,028 INFO L82 PathProgramCache]: Analyzing trace with hash -46471581, now seen corresponding path program 1 times [2021-02-21 18:57:40,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:40,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103313235] [2021-02-21 18:57:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:40,039 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:57:40,138 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:57:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:57:40,221 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:57:40,461 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:57:40,462 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:57:40,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:57:40,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:57:40 BoogieIcfgContainer [2021-02-21 18:57:40,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:57:40,509 INFO L168 Benchmark]: Toolchain (without parser) took 25477.72 ms. Allocated memory was 151.0 MB in the beginning and 588.3 MB in the end (delta: 437.3 MB). Free memory was 127.3 MB in the beginning and 290.5 MB in the end (delta: -163.2 MB). Peak memory consumption was 275.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:40,515 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:57:40,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 104.9 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:40,516 INFO L168 Benchmark]: Boogie Preprocessor took 172.97 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 101.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:40,517 INFO L168 Benchmark]: RCFGBuilder took 1746.57 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 100.7 MB in the beginning and 167.6 MB in the end (delta: -66.8 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:40,518 INFO L168 Benchmark]: TraceAbstraction took 22911.00 ms. Allocated memory was 196.1 MB in the beginning and 588.3 MB in the end (delta: 392.2 MB). Free memory was 167.0 MB in the beginning and 290.5 MB in the end (delta: -123.5 MB). Peak memory consumption was 269.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:40,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 629.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 104.9 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 172.97 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 101.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1746.57 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 100.7 MB in the beginning and 167.6 MB in the end (delta: -66.8 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22911.00 ms. Allocated memory was 196.1 MB in the beginning and 588.3 MB in the end (delta: 392.2 MB). Free memory was 167.0 MB in the beginning and 290.5 MB in the end (delta: -123.5 MB). Peak memory consumption was 269.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 929]: 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; [L446] int cleanupTimeShifts = 4; [L592] int pumpRunning = 0; [L593] int systemActive = 1; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L524] int retValue_acc ; [L525] int tmp ; [L529] FCALL select_helpers() [L530] FCALL select_features() [L531] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L531] RET, EXPR valid_product() [L531] tmp = valid_product() [L533] COND TRUE \read(tmp) [L535] FCALL setup() [L536] CALL runTest() [L518] CALL test() [L768] int splverifierCounter ; [L769] int tmp ; [L770] int tmp___0 ; [L771] int tmp___1 ; [L772] int tmp___2 ; [L775] splverifierCounter = 0 [L777] COND TRUE 1 [L779] COND TRUE splverifierCounter < 4 [L785] tmp = __VERIFIER_nondet_int() [L787] COND TRUE \read(tmp) [L789] CALL waterRise() [L854] COND TRUE waterLevel < 2 [L855] waterLevel = waterLevel + 1 [L789] RET waterRise() [L795] tmp___0 = __VERIFIER_nondet_int() [L797] COND FALSE !(\read(tmp___0)) [L805] tmp___2 = __VERIFIER_nondet_int() [L807] COND FALSE !(\read(tmp___2)) [L813] tmp___1 = __VERIFIER_nondet_int() [L815] COND TRUE \read(tmp___1) [L817] CALL stopSystem() [L747] COND FALSE !(\read(pumpRunning)) [L754] systemActive = 0 [L817] RET stopSystem() [L824] CALL timeShift() [L599] COND FALSE !(\read(pumpRunning)) [L606] COND FALSE !(\read(systemActive)) [L614] CALL __utac_acc__Specification3_spec__1() [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L558] CALL, EXPR isMethaneLevelCritical() [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L558] RET, EXPR isMethaneLevelCritical() [L558] tmp = isMethaneLevelCritical() [L560] COND FALSE !(\read(tmp)) [L564] CALL, EXPR getWaterLevel() [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L564] RET, EXPR getWaterLevel() [L564] tmp___0 = getWaterLevel() [L566] COND TRUE tmp___0 == 2 [L568] CALL, EXPR isPumpRunning() [L680] int retValue_acc ; [L683] retValue_acc = pumpRunning [L684] return (retValue_acc); [L568] RET, EXPR isPumpRunning() [L568] tmp___1 = isPumpRunning() [L570] COND FALSE !(\read(tmp___1)) [L574] CALL __automaton_fail() [L929] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1163 SDtfs, 1783 SDslu, 1593 SDs, 0 SdLazy, 3181 SolverSat, 594 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=736occurred 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: 1.1s 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...