/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:59:17,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:59:17,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:59:17,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:59:17,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:59:17,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:59:17,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:59:17,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:59:17,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:59:17,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:59:17,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:59:17,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:59:17,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:59:17,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:59:17,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:59:17,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:59:17,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:59:17,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:59:17,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:59:17,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:59:17,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:59:17,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:59:17,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:59:17,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:59:17,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:59:17,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:59:17,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:59:17,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:59:17,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:59:17,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:59:17,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:59:17,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:59:17,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:59:17,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:59:17,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:59:17,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:59:17,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:59:17,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:59:17,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:59:17,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:59:17,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:59:17,391 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 18:59:17,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:59:17,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:59:17,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:59:17,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:59:17,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:59:17,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:59:17,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:59:17,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:59:17,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:59:17,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:59:17,415 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:59:17,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:59:17,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:59:17,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:59:17,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:59:17,416 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:59:17,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:59:17,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:59:17,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:59:17,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:59:17,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:59:17,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:59:17,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:59:17,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:59:17,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:59:17,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:59:17,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:59:17,888 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:59:17,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2021-02-21 18:59:17,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97a0f4be/be127c371c8f42b2ba459cb74a075311/FLAGdf8db064c [2021-02-21 18:59:18,606 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:59:18,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2021-02-21 18:59:18,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97a0f4be/be127c371c8f42b2ba459cb74a075311/FLAGdf8db064c [2021-02-21 18:59:18,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97a0f4be/be127c371c8f42b2ba459cb74a075311 [2021-02-21 18:59:18,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:59:18,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:59:18,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:59:18,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:59:18,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:59:18,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b01521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18, skipping insertion in model container [2021-02-21 18:59:18,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:59:18,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:59:19,257 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_product44.cil.c[4955,4968] [2021-02-21 18:59:19,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:59:19,380 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:59:19,450 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_product44.cil.c[4955,4968] [2021-02-21 18:59:19,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:59:19,538 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:59:19,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19 WrapperNode [2021-02-21 18:59:19,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:59:19,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:59:19,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:59:19,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:59:19,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:59:19,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:59:19,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:59:19,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:59:19,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (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 18:59:19,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:59:19,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:59:19,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:59:19,829 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:59:19,829 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:59:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:59:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:59:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:59:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:59:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:59:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:59:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:59:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:59:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:59:19,833 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:59:19,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:59:19,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:59:19,833 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:59:19,834 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:59:19,834 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:59:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:59:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:59:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:59:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:59:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:59:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:59:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:59:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:59:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:59:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:59:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:59:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:59:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:59:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:59:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:59:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:59:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:59:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:59:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:59:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:59:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:59:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:59:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:59:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:59:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:59:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:59:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:59:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:59:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:59:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:59:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:59:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:59:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:59:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:59:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:59:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:59:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:59:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:59:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:59:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:59:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:59:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:59:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:59:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:59:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:59:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:59:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:59:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:59:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:59:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:59:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:59:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:59:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:59:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:59:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:59:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:59:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:59:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:59:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:59:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:59:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:59:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:59:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:59:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:59:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:59:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:59:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:59:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:59:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:59:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:59:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:59:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:59:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:59:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:59:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:59:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:59:21,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:59:21,457 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:59:21,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:59:21 BoogieIcfgContainer [2021-02-21 18:59:21,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:59:21,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:59:21,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:59:21,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:59:21,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:59:18" (1/3) ... [2021-02-21 18:59:21,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65121d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:59:21, skipping insertion in model container [2021-02-21 18:59:21,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19" (2/3) ... [2021-02-21 18:59:21,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65121d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:59:21, skipping insertion in model container [2021-02-21 18:59:21,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:59:21" (3/3) ... [2021-02-21 18:59:21,469 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2021-02-21 18:59:21,476 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:59:21,482 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:59:21,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:59:21,527 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:59:21,528 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:59:21,528 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:59:21,528 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:59:21,528 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:59:21,529 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:59:21,529 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:59:21,529 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:59:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states. [2021-02-21 18:59:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:59:21,572 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:21,573 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 18:59:21,574 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:21,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1171320644, now seen corresponding path program 1 times [2021-02-21 18:59:21,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:21,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136845846] [2021-02-21 18:59:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:21,668 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,616 WARN L202 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:59:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:59:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:59:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,834 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 18:59:22,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136845846] [2021-02-21 18:59:22,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:22,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:59:22,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537762610] [2021-02-21 18:59:22,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:59:22,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:22,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:59:22,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:59:22,863 INFO L87 Difference]: Start difference. First operand 325 states. Second operand 3 states. [2021-02-21 18:59:24,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:24,538 INFO L93 Difference]: Finished difference Result 512 states and 604 transitions. [2021-02-21 18:59:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:59:24,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:59:24,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:24,556 INFO L225 Difference]: With dead ends: 512 [2021-02-21 18:59:24,557 INFO L226 Difference]: Without dead ends: 317 [2021-02-21 18:59:24,562 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 18:59:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-21 18:59:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 273. [2021-02-21 18:59:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2021-02-21 18:59:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2021-02-21 18:59:24,747 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 158 [2021-02-21 18:59:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:24,748 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2021-02-21 18:59:24,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:59:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2021-02-21 18:59:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:59:24,753 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:24,753 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 18:59:24,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:59:24,754 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:24,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:24,754 INFO L82 PathProgramCache]: Analyzing trace with hash -35657380, now seen corresponding path program 1 times [2021-02-21 18:59:24,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:24,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843366813] [2021-02-21 18:59:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:24,759 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:24,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,195 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:25,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:59:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:59:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:59:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,351 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 18:59:25,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843366813] [2021-02-21 18:59:25,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:25,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:59:25,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269217101] [2021-02-21 18:59:25,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:59:25,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:25,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:59:25,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:59:25,356 INFO L87 Difference]: Start difference. First operand 273 states and 295 transitions. Second operand 4 states. [2021-02-21 18:59:26,072 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:59:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:27,170 INFO L93 Difference]: Finished difference Result 415 states and 464 transitions. [2021-02-21 18:59:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:59:27,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:59:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:27,175 INFO L225 Difference]: With dead ends: 415 [2021-02-21 18:59:27,175 INFO L226 Difference]: Without dead ends: 300 [2021-02-21 18:59:27,177 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 18:59:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-21 18:59:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 263. [2021-02-21 18:59:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-21 18:59:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 282 transitions. [2021-02-21 18:59:27,287 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 282 transitions. Word has length 159 [2021-02-21 18:59:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:27,287 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 282 transitions. [2021-02-21 18:59:27,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:59:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 282 transitions. [2021-02-21 18:59:27,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:59:27,290 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:27,291 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 18:59:27,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:59:27,291 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:27,292 INFO L82 PathProgramCache]: Analyzing trace with hash 999486224, now seen corresponding path program 1 times [2021-02-21 18:59:27,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:27,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59441169] [2021-02-21 18:59:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:27,296 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:27,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:27,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:27,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,809 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:59:27,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:59:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:59:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:28,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:59:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:59:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:59:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,059 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 18:59:28,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59441169] [2021-02-21 18:59:28,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:28,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:59:28,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586440916] [2021-02-21 18:59:28,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:59:28,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:28,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:59:28,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:59:28,067 INFO L87 Difference]: Start difference. First operand 263 states and 282 transitions. Second operand 10 states. [2021-02-21 18:59:28,644 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:29,088 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:59:29,466 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:59:29,841 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:30,195 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:30,571 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:31,561 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:59:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:34,219 INFO L93 Difference]: Finished difference Result 725 states and 836 transitions. [2021-02-21 18:59:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:59:34,220 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:59:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:34,227 INFO L225 Difference]: With dead ends: 725 [2021-02-21 18:59:34,227 INFO L226 Difference]: Without dead ends: 577 [2021-02-21 18:59:34,229 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 18:59:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-02-21 18:59:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 470. [2021-02-21 18:59:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2021-02-21 18:59:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 519 transitions. [2021-02-21 18:59:34,453 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 519 transitions. Word has length 172 [2021-02-21 18:59:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:34,453 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 519 transitions. [2021-02-21 18:59:34,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:59:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 519 transitions. [2021-02-21 18:59:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:59:34,458 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:34,458 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 18:59:34,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:59:34,459 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:34,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1228472031, now seen corresponding path program 1 times [2021-02-21 18:59:34,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:34,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911220572] [2021-02-21 18:59:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:34,466 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,876 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:34,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:59:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:59:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:59:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 18:59:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:34,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:34,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:34,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:34,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 18:59:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,049 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 18:59:35,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911220572] [2021-02-21 18:59:35,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:35,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:59:35,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739448925] [2021-02-21 18:59:35,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:59:35,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:35,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:59:35,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:59:35,056 INFO L87 Difference]: Start difference. First operand 470 states and 519 transitions. Second operand 9 states. [2021-02-21 18:59:35,635 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:37,472 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:37,891 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:38,260 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:38,688 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:39,088 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:39,506 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:39,877 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:41,083 INFO L93 Difference]: Finished difference Result 1262 states and 1498 transitions. [2021-02-21 18:59:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:59:41,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 18:59:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:41,092 INFO L225 Difference]: With dead ends: 1262 [2021-02-21 18:59:41,092 INFO L226 Difference]: Without dead ends: 907 [2021-02-21 18:59:41,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:59:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-02-21 18:59:41,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 804. [2021-02-21 18:59:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2021-02-21 18:59:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 908 transitions. [2021-02-21 18:59:41,423 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 908 transitions. Word has length 177 [2021-02-21 18:59:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:41,424 INFO L480 AbstractCegarLoop]: Abstraction has 804 states and 908 transitions. [2021-02-21 18:59:41,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:59:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 908 transitions. [2021-02-21 18:59:41,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:59:41,429 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:41,429 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 18:59:41,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:59:41,429 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:41,430 INFO L82 PathProgramCache]: Analyzing trace with hash -963125367, now seen corresponding path program 1 times [2021-02-21 18:59:41,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:41,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132532768] [2021-02-21 18:59:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:41,434 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:41,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:41,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:41,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:41,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:41,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:41,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,812 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:41,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:41,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:59:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:59:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:59:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:59:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 18:59:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:41,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:41,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:42,021 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 18:59:42,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132532768] [2021-02-21 18:59:42,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:42,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:59:42,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892780316] [2021-02-21 18:59:42,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:59:42,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:42,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:59:42,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:59:42,023 INFO L87 Difference]: Start difference. First operand 804 states and 908 transitions. Second operand 6 states. [2021-02-21 18:59:42,623 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:45,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:45,190 INFO L93 Difference]: Finished difference Result 1860 states and 2189 transitions. [2021-02-21 18:59:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 18:59:45,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 18:59:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:45,207 INFO L225 Difference]: With dead ends: 1860 [2021-02-21 18:59:45,207 INFO L226 Difference]: Without dead ends: 1171 [2021-02-21 18:59:45,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:59:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-02-21 18:59:45,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1091. [2021-02-21 18:59:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2021-02-21 18:59:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1236 transitions. [2021-02-21 18:59:45,840 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1236 transitions. Word has length 182 [2021-02-21 18:59:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:45,841 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1236 transitions. [2021-02-21 18:59:45,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:59:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1236 transitions. [2021-02-21 18:59:45,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:59:45,844 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:45,844 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 18:59:45,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:59:45,845 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:45,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1043658529, now seen corresponding path program 1 times [2021-02-21 18:59:45,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:45,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540885001] [2021-02-21 18:59:45,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:45,849 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:59:45,948 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:59:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:59:46,026 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:59:46,237 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:59:46,237 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:59:46,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:59:46,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:59:46 BoogieIcfgContainer [2021-02-21 18:59:46,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:59:46,276 INFO L168 Benchmark]: Toolchain (without parser) took 27381.55 ms. Allocated memory was 151.0 MB in the beginning and 621.8 MB in the end (delta: 470.8 MB). Free memory was 126.0 MB in the beginning and 491.9 MB in the end (delta: -365.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:46,279 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:59:46,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.60 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 103.9 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:46,284 INFO L168 Benchmark]: Boogie Preprocessor took 104.26 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 100.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:46,288 INFO L168 Benchmark]: RCFGBuilder took 1815.09 ms. Allocated memory was 151.0 MB in the beginning and 206.6 MB in the end (delta: 55.6 MB). Free memory was 99.9 MB in the beginning and 138.0 MB in the end (delta: -38.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:46,288 INFO L168 Benchmark]: TraceAbstraction took 24813.33 ms. Allocated memory was 206.6 MB in the beginning and 621.8 MB in the end (delta: 415.2 MB). Free memory was 137.5 MB in the beginning and 491.9 MB in the end (delta: -354.4 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:46,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 627.60 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 103.9 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.26 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 100.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1815.09 ms. Allocated memory was 151.0 MB in the beginning and 206.6 MB in the end (delta: 55.6 MB). Free memory was 99.9 MB in the beginning and 138.0 MB in the end (delta: -38.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24813.33 ms. Allocated memory was 206.6 MB in the beginning and 621.8 MB in the end (delta: 415.2 MB). Free memory was 137.5 MB in the beginning and 491.9 MB in the end (delta: -354.4 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 320]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L187] int waterLevel = 1; [L188] int methaneLevelCritical = 0; [L494] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L695] int pumpRunning = 0; [L696] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L889] int splverifierCounter ; [L890] int tmp ; [L891] int tmp___0 ; [L892] int tmp___1 ; [L893] int tmp___2 ; [L896] splverifierCounter = 0 [L898] COND TRUE 1 [L900] COND TRUE splverifierCounter < 4 [L906] tmp = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp) [L910] CALL waterRise() [L205] COND TRUE waterLevel < 2 [L206] waterLevel = waterLevel + 1 [L910] RET waterRise() [L916] tmp___0 = __VERIFIER_nondet_int() [L918] COND FALSE !(\read(tmp___0)) [L926] tmp___2 = __VERIFIER_nondet_int() [L928] COND FALSE !(\read(tmp___2)) [L934] tmp___1 = __VERIFIER_nondet_int() [L936] COND TRUE \read(tmp___1) [L938] CALL stopSystem() [L868] COND FALSE !(\read(pumpRunning)) [L875] systemActive = 0 [L938] RET stopSystem() [L945] CALL timeShift() [L702] COND FALSE !(\read(pumpRunning)) [L709] COND FALSE !(\read(systemActive)) [L717] CALL __utac_acc__Specification3_spec__1() [L151] int tmp ; [L152] int tmp___0 ; [L153] int tmp___1 ; [L157] CALL, EXPR isMethaneLevelCritical() [L226] int retValue_acc ; [L229] retValue_acc = methaneLevelCritical [L230] return (retValue_acc); [L157] RET, EXPR isMethaneLevelCritical() [L157] tmp = isMethaneLevelCritical() [L159] COND FALSE !(\read(tmp)) [L163] CALL, EXPR getWaterLevel() [L258] int retValue_acc ; [L261] retValue_acc = waterLevel [L262] return (retValue_acc); [L163] RET, EXPR getWaterLevel() [L163] tmp___0 = getWaterLevel() [L165] COND TRUE tmp___0 == 2 [L167] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L167] RET, EXPR isPumpRunning() [L167] tmp___1 = isPumpRunning() [L169] COND FALSE !(\read(tmp___1)) [L173] CALL __automaton_fail() [L320] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 640 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1308 SDtfs, 2146 SDslu, 1653 SDs, 0 SdLazy, 3711 SolverSat, 728 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1091occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 371 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...