/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:33:40,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:33:40,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:33:40,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:33:40,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:33:40,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:33:40,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:33:40,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:33:40,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:33:40,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:33:40,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:33:40,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:33:40,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:33:40,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:33:40,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:33:40,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:33:40,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:33:40,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:33:40,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:33:40,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:33:40,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:33:40,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:33:40,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:33:40,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:33:41,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:33:41,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:33:41,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:33:41,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:33:41,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:33:41,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:33:41,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:33:41,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:33:41,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:33:41,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:33:41,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:33:41,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:33:41,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:33:41,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:33:41,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:33:41,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:33:41,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:33:41,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:33:41,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:33:41,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:33:41,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:33:41,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:33:41,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:33:41,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:33:41,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:33:41,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:33:41,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:33:41,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:33:41,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:33:41,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:33:41,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:33:41,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:33:41,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:33:41,029 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:33:41,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:33:41,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:33:41,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:33:41,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:33:41,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:33:41,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:33:41,030 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:33:41,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:33:41,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:33:41,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:33:41,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:33:41,531 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:33:41,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-09-04 15:33:41,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447aec47d/2326f792fb7c4e9982041ac448feaae8/FLAG282003ddd [2020-09-04 15:33:42,215 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:33:42,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-09-04 15:33:42,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447aec47d/2326f792fb7c4e9982041ac448feaae8/FLAG282003ddd [2020-09-04 15:33:42,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447aec47d/2326f792fb7c4e9982041ac448feaae8 [2020-09-04 15:33:42,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:33:42,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:33:42,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:33:42,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:33:42,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:33:42,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:33:42" (1/1) ... [2020-09-04 15:33:42,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c86c800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:42, skipping insertion in model container [2020-09-04 15:33:42,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:33:42" (1/1) ... [2020-09-04 15:33:42,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:33:42,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:33:42,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:33:42,979 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:33:43,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:33:43,117 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:33:43,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43 WrapperNode [2020-09-04 15:33:43,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:33:43,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:33:43,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:33:43,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:33:43,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (1/1) ... [2020-09-04 15:33:43,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (1/1) ... [2020-09-04 15:33:43,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (1/1) ... [2020-09-04 15:33:43,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (1/1) ... [2020-09-04 15:33:43,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (1/1) ... [2020-09-04 15:33:43,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (1/1) ... [2020-09-04 15:33:43,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (1/1) ... [2020-09-04 15:33:43,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:33:43,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:33:43,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:33:43,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:33:43,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:33:43,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:33:43,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:33:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:33:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:33:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:33:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:33:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:33:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:33:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:33:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:33:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:33:43,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:33:43,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:33:43,299 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:33:43,300 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:33:43,300 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:33:43,300 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:33:43,300 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:33:43,301 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:33:43,301 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:33:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:33:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:33:43,305 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:33:43,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:33:43,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:33:43,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:33:43,306 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:33:43,306 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:33:43,307 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:33:43,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:33:43,307 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:33:43,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:33:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:33:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:33:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:33:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:33:43,310 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:33:43,310 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:33:43,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:33:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:33:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:33:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:33:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:33:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:33:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:33:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:33:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:33:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:33:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:33:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:33:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:33:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:33:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:33:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:33:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:33:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:33:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:33:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:33:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:33:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:33:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:33:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:33:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:33:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:33:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:33:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:33:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:33:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:33:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:33:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:33:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:33:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:33:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:33:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:33:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:33:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:33:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:33:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:33:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:33:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:33:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:33:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:33:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:33:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:33:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:33:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:33:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:33:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:33:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:33:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:33:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:33:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:33:44,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:33:44,557 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:33:44,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:33:44 BoogieIcfgContainer [2020-09-04 15:33:44,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:33:44,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:33:44,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:33:44,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:33:44,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:33:42" (1/3) ... [2020-09-04 15:33:44,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bba05a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:33:44, skipping insertion in model container [2020-09-04 15:33:44,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:43" (2/3) ... [2020-09-04 15:33:44,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bba05a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:33:44, skipping insertion in model container [2020-09-04 15:33:44,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:33:44" (3/3) ... [2020-09-04 15:33:44,584 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-09-04 15:33:44,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:33:44,610 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:33:44,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:33:44,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:33:44,666 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:33:44,666 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:33:44,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:33:44,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:33:44,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:33:44,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:33:44,667 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:33:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2020-09-04 15:33:44,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:33:44,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:44,752 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] [2020-09-04 15:33:44,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:44,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:44,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1206638140, now seen corresponding path program 1 times [2020-09-04 15:33:44,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:44,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349280038] [2020-09-04 15:33:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:44,876 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:45,593 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:45,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:33:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:33:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:33:45,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349280038] [2020-09-04 15:33:45,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:45,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:33:45,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248467260] [2020-09-04 15:33:45,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:33:45,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:45,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:33:45,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:33:45,839 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2020-09-04 15:33:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:47,161 INFO L93 Difference]: Finished difference Result 491 states and 585 transitions. [2020-09-04 15:33:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:33:47,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:33:47,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:47,184 INFO L225 Difference]: With dead ends: 491 [2020-09-04 15:33:47,184 INFO L226 Difference]: Without dead ends: 304 [2020-09-04 15:33:47,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:33:47,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-04 15:33:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 261. [2020-09-04 15:33:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-04 15:33:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 284 transitions. [2020-09-04 15:33:47,334 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 284 transitions. Word has length 142 [2020-09-04 15:33:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:47,335 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 284 transitions. [2020-09-04 15:33:47,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:33:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 284 transitions. [2020-09-04 15:33:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:33:47,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:47,340 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] [2020-09-04 15:33:47,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:33:47,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:47,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:47,341 INFO L82 PathProgramCache]: Analyzing trace with hash 965995347, now seen corresponding path program 1 times [2020-09-04 15:33:47,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:47,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371628455] [2020-09-04 15:33:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:47,344 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:47,757 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:47,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:47,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:33:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:33:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:33:47,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371628455] [2020-09-04 15:33:47,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:47,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:33:47,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875090841] [2020-09-04 15:33:47,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:33:47,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:47,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:33:47,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:33:47,848 INFO L87 Difference]: Start difference. First operand 261 states and 284 transitions. Second operand 4 states. [2020-09-04 15:33:48,484 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:49,533 INFO L93 Difference]: Finished difference Result 402 states and 452 transitions. [2020-09-04 15:33:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:33:49,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:33:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:49,540 INFO L225 Difference]: With dead ends: 402 [2020-09-04 15:33:49,541 INFO L226 Difference]: Without dead ends: 287 [2020-09-04 15:33:49,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:33:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-04 15:33:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 251. [2020-09-04 15:33:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-04 15:33:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 271 transitions. [2020-09-04 15:33:49,654 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 271 transitions. Word has length 143 [2020-09-04 15:33:49,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:49,654 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 271 transitions. [2020-09-04 15:33:49,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:33:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 271 transitions. [2020-09-04 15:33:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-04 15:33:49,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:49,657 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] [2020-09-04 15:33:49,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:33:49,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:49,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:49,658 INFO L82 PathProgramCache]: Analyzing trace with hash 67671664, now seen corresponding path program 1 times [2020-09-04 15:33:49,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:49,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924252073] [2020-09-04 15:33:49,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:49,661 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:50,057 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:50,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:33:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:33:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:33:50,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924252073] [2020-09-04 15:33:50,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:50,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:33:50,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752251726] [2020-09-04 15:33:50,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:33:50,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:50,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:33:50,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:33:50,236 INFO L87 Difference]: Start difference. First operand 251 states and 271 transitions. Second operand 9 states. [2020-09-04 15:33:50,739 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:51,118 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:51,378 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:51,678 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:52,004 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:52,287 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:53,275 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:55,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:55,597 INFO L93 Difference]: Finished difference Result 664 states and 764 transitions. [2020-09-04 15:33:55,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:33:55,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-04 15:33:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:55,604 INFO L225 Difference]: With dead ends: 664 [2020-09-04 15:33:55,604 INFO L226 Difference]: Without dead ends: 523 [2020-09-04 15:33:55,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:33:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-09-04 15:33:55,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 456. [2020-09-04 15:33:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-09-04 15:33:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 510 transitions. [2020-09-04 15:33:55,766 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 510 transitions. Word has length 152 [2020-09-04 15:33:55,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:55,769 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 510 transitions. [2020-09-04 15:33:55,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:33:55,770 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 510 transitions. [2020-09-04 15:33:55,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:33:55,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:55,773 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] [2020-09-04 15:33:55,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:33:55,774 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:55,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1856383956, now seen corresponding path program 1 times [2020-09-04 15:33:55,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:55,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672646310] [2020-09-04 15:33:55,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:55,778 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,137 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:33:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:33:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:33:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:33:56,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672646310] [2020-09-04 15:33:56,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:56,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:33:56,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179268037] [2020-09-04 15:33:56,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:33:56,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:56,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:33:56,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:33:56,449 INFO L87 Difference]: Start difference. First operand 456 states and 510 transitions. Second operand 14 states. [2020-09-04 15:33:57,124 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:57,597 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:57,848 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:58,133 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:58,493 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:58,784 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:59,515 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:00,859 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:01,270 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:01,753 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:02,134 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:02,491 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:02,766 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:03,067 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:03,395 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:03,682 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:04,151 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:04,597 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:04,936 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:05,345 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:07,407 INFO L93 Difference]: Finished difference Result 1576 states and 1979 transitions. [2020-09-04 15:34:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 15:34:07,407 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 161 [2020-09-04 15:34:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:07,417 INFO L225 Difference]: With dead ends: 1576 [2020-09-04 15:34:07,417 INFO L226 Difference]: Without dead ends: 1230 [2020-09-04 15:34:07,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 15:34:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-09-04 15:34:07,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1095. [2020-09-04 15:34:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-09-04 15:34:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1295 transitions. [2020-09-04 15:34:07,920 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1295 transitions. Word has length 161 [2020-09-04 15:34:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:07,921 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1295 transitions. [2020-09-04 15:34:07,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:34:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1295 transitions. [2020-09-04 15:34:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:34:07,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:07,927 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] [2020-09-04 15:34:07,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:34:07,928 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:07,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1830771564, now seen corresponding path program 1 times [2020-09-04 15:34:07,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:07,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783898347] [2020-09-04 15:34:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:07,932 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,363 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:08,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:34:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:34:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:34:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:34:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:08,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783898347] [2020-09-04 15:34:08,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:08,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:34:08,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255532776] [2020-09-04 15:34:08,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:34:08,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:34:08,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:34:08,558 INFO L87 Difference]: Start difference. First operand 1095 states and 1295 transitions. Second operand 6 states. [2020-09-04 15:34:09,158 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:11,775 INFO L93 Difference]: Finished difference Result 2528 states and 3176 transitions. [2020-09-04 15:34:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 15:34:11,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-04 15:34:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:11,786 INFO L225 Difference]: With dead ends: 2528 [2020-09-04 15:34:11,787 INFO L226 Difference]: Without dead ends: 1543 [2020-09-04 15:34:11,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:34:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-09-04 15:34:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1420. [2020-09-04 15:34:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2020-09-04 15:34:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1676 transitions. [2020-09-04 15:34:12,276 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1676 transitions. Word has length 166 [2020-09-04 15:34:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:12,277 INFO L479 AbstractCegarLoop]: Abstraction has 1420 states and 1676 transitions. [2020-09-04 15:34:12,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:34:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1676 transitions. [2020-09-04 15:34:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 15:34:12,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:12,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:12,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:34:12,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:12,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:12,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1034967707, now seen corresponding path program 1 times [2020-09-04 15:34:12,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:12,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102357294] [2020-09-04 15:34:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:12,324 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,710 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:34:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 15:34:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-04 15:34:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-09-04 15:34:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:12,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102357294] [2020-09-04 15:34:12,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:12,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:34:12,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785099394] [2020-09-04 15:34:12,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:34:12,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:12,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:34:12,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:34:12,930 INFO L87 Difference]: Start difference. First operand 1420 states and 1676 transitions. Second operand 11 states. [2020-09-04 15:34:13,633 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:15,847 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:16,171 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:16,523 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:16,894 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:17,235 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:18,053 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:18,349 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:18,757 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:19,657 INFO L93 Difference]: Finished difference Result 1584 states and 1921 transitions. [2020-09-04 15:34:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:34:19,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 205 [2020-09-04 15:34:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:19,668 INFO L225 Difference]: With dead ends: 1584 [2020-09-04 15:34:19,668 INFO L226 Difference]: Without dead ends: 1581 [2020-09-04 15:34:19,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:34:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-09-04 15:34:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1429. [2020-09-04 15:34:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-09-04 15:34:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1684 transitions. [2020-09-04 15:34:20,109 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1684 transitions. Word has length 205 [2020-09-04 15:34:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:20,109 INFO L479 AbstractCegarLoop]: Abstraction has 1429 states and 1684 transitions. [2020-09-04 15:34:20,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:34:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1684 transitions. [2020-09-04 15:34:20,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-09-04 15:34:20,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:20,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:20,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:34:20,119 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:20,119 INFO L82 PathProgramCache]: Analyzing trace with hash 334833513, now seen corresponding path program 1 times [2020-09-04 15:34:20,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:20,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054061118] [2020-09-04 15:34:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:20,128 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,474 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:34:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 15:34:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-04 15:34:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-09-04 15:34:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-04 15:34:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 15:34:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:20,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054061118] [2020-09-04 15:34:20,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:20,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 15:34:20,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16918152] [2020-09-04 15:34:20,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 15:34:20,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 15:34:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-09-04 15:34:20,892 INFO L87 Difference]: Start difference. First operand 1429 states and 1684 transitions. Second operand 13 states. [2020-09-04 15:34:22,357 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:22,921 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:23,229 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:23,569 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:34:23,896 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:24,255 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:24,552 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:26,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:26,697 INFO L93 Difference]: Finished difference Result 2379 states and 2890 transitions. [2020-09-04 15:34:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:34:26,697 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 276 [2020-09-04 15:34:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:26,703 INFO L225 Difference]: With dead ends: 2379 [2020-09-04 15:34:26,703 INFO L226 Difference]: Without dead ends: 786 [2020-09-04 15:34:26,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2020-09-04 15:34:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-09-04 15:34:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 697. [2020-09-04 15:34:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-04 15:34:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 797 transitions. [2020-09-04 15:34:27,000 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 797 transitions. Word has length 276 [2020-09-04 15:34:27,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:27,000 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 797 transitions. [2020-09-04 15:34:27,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 15:34:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 797 transitions. [2020-09-04 15:34:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-04 15:34:27,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:27,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:27,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:34:27,008 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:27,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:27,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1108494821, now seen corresponding path program 1 times [2020-09-04 15:34:27,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:27,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041839755] [2020-09-04 15:34:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:27,025 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,402 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:34:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 15:34:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-09-04 15:34:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-04 15:34:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 15:34:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 15:34:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 15:34:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 15:34:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:27,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041839755] [2020-09-04 15:34:27,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:27,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:34:27,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382602699] [2020-09-04 15:34:27,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:34:27,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:27,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:34:27,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:34:27,824 INFO L87 Difference]: Start difference. First operand 697 states and 797 transitions. Second operand 11 states. [2020-09-04 15:34:28,558 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-09-04 15:34:29,265 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:31,436 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-09-04 15:34:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:33,920 INFO L93 Difference]: Finished difference Result 1333 states and 1617 transitions. [2020-09-04 15:34:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 15:34:33,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 270 [2020-09-04 15:34:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:33,926 INFO L225 Difference]: With dead ends: 1333 [2020-09-04 15:34:33,927 INFO L226 Difference]: Without dead ends: 899 [2020-09-04 15:34:33,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2020-09-04 15:34:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-09-04 15:34:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 826. [2020-09-04 15:34:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-09-04 15:34:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 953 transitions. [2020-09-04 15:34:34,373 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 953 transitions. Word has length 270 [2020-09-04 15:34:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:34,374 INFO L479 AbstractCegarLoop]: Abstraction has 826 states and 953 transitions. [2020-09-04 15:34:34,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:34:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 953 transitions. [2020-09-04 15:34:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-04 15:34:34,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:34,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:34,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:34:34,386 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:34,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:34,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1369825411, now seen corresponding path program 1 times [2020-09-04 15:34:34,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:34,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706458330] [2020-09-04 15:34:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:34,403 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,756 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:34,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:34:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 15:34:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-04 15:34:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 15:34:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 15:34:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 15:34:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:34,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 15:34:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:35,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706458330] [2020-09-04 15:34:35,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:35,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:34:35,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584371954] [2020-09-04 15:34:35,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:34:35,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:35,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:34:35,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:34:35,037 INFO L87 Difference]: Start difference. First operand 826 states and 953 transitions. Second operand 14 states. [2020-09-04 15:34:35,649 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:35,969 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:36,286 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:36,595 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:36,875 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:37,761 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:38,123 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:38,443 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:38,759 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:39,065 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:40,703 INFO L93 Difference]: Finished difference Result 1497 states and 1782 transitions. [2020-09-04 15:34:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:34:40,704 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 260 [2020-09-04 15:34:40,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:40,709 INFO L225 Difference]: With dead ends: 1497 [2020-09-04 15:34:40,709 INFO L226 Difference]: Without dead ends: 781 [2020-09-04 15:34:40,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-04 15:34:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-04 15:34:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 736. [2020-09-04 15:34:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-09-04 15:34:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 835 transitions. [2020-09-04 15:34:41,063 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 835 transitions. Word has length 260 [2020-09-04 15:34:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:41,064 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 835 transitions. [2020-09-04 15:34:41,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:34:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 835 transitions. [2020-09-04 15:34:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-04 15:34:41,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:41,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:41,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:34:41,071 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:41,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:41,071 INFO L82 PathProgramCache]: Analyzing trace with hash 457192745, now seen corresponding path program 1 times [2020-09-04 15:34:41,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:41,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599147327] [2020-09-04 15:34:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:41,086 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,545 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:34:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 15:34:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-09-04 15:34:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-04 15:34:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 15:34:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-09-04 15:34:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-09-04 15:34:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:41,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599147327] [2020-09-04 15:34:41,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:41,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 15:34:41,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899312090] [2020-09-04 15:34:41,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 15:34:41,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:41,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 15:34:41,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-04 15:34:41,814 INFO L87 Difference]: Start difference. First operand 736 states and 835 transitions. Second operand 13 states. [2020-09-04 15:34:42,323 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:43,133 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:44,327 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:44,624 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:44,952 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:45,256 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:45,546 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:45,913 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:46,198 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:46,510 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:46,863 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:47,173 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:48,828 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:49,106 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:50,278 INFO L93 Difference]: Finished difference Result 1658 states and 1991 transitions. [2020-09-04 15:34:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-04 15:34:50,279 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 265 [2020-09-04 15:34:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:50,285 INFO L225 Difference]: With dead ends: 1658 [2020-09-04 15:34:50,285 INFO L226 Difference]: Without dead ends: 1118 [2020-09-04 15:34:50,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=363, Invalid=897, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 15:34:50,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2020-09-04 15:34:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 975. [2020-09-04 15:34:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-09-04 15:34:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1122 transitions. [2020-09-04 15:34:50,597 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1122 transitions. Word has length 265 [2020-09-04 15:34:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:50,598 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1122 transitions. [2020-09-04 15:34:50,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 15:34:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1122 transitions. [2020-09-04 15:34:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-09-04 15:34:50,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:50,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:50,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:34:50,603 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:50,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:50,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1481542736, now seen corresponding path program 2 times [2020-09-04 15:34:50,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:50,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397552890] [2020-09-04 15:34:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:50,622 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:34:50,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:34:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:34:50,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:34:51,146 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:34:51,147 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:34:51,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 15:34:51,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:34:51 BoogieIcfgContainer [2020-09-04 15:34:51,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:34:51,187 INFO L168 Benchmark]: Toolchain (without parser) took 68725.47 ms. Allocated memory was 138.4 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 102.3 MB in the beginning and 656.6 MB in the end (delta: -554.3 MB). Peak memory consumption was 532.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,188 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.09 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 168.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,189 INFO L168 Benchmark]: Boogie Preprocessor took 92.29 ms. Allocated memory is still 202.4 MB. Free memory was 168.8 MB in the beginning and 164.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,190 INFO L168 Benchmark]: RCFGBuilder took 1359.96 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 164.6 MB in the beginning and 174.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,190 INFO L168 Benchmark]: TraceAbstraction took 66611.56 ms. Allocated memory was 234.9 MB in the beginning and 1.2 GB in the end (delta: 990.4 MB). Free memory was 174.0 MB in the beginning and 656.6 MB in the end (delta: -482.7 MB). Peak memory consumption was 507.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 655.09 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 168.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.29 ms. Allocated memory is still 202.4 MB. Free memory was 168.8 MB in the beginning and 164.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1359.96 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 164.6 MB in the beginning and 174.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 66611.56 ms. Allocated memory was 234.9 MB in the beginning and 1.2 GB in the end (delta: 990.4 MB). Free memory was 174.0 MB in the beginning and 656.6 MB in the end (delta: -482.7 MB). Peak memory consumption was 507.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int pumpRunning = 0; [L525] int systemActive = 1; [L728] int waterLevel = 1; [L729] int methaneLevelCritical = 0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L450] int splverifierCounter ; [L451] int tmp ; [L452] int tmp___0 ; [L453] int tmp___1 ; [L454] int tmp___2 ; [L457] splverifierCounter = 0 [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND TRUE \read(tmp) [L471] CALL waterRise() [L746] COND TRUE waterLevel < 2 [L747] waterLevel = waterLevel + 1 [L471] RET waterRise() [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND FALSE !(\read(pumpRunning)) [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND FALSE !(\read(pumpRunning)) [L605] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND TRUE ! pumpRunning [L566] CALL, EXPR isHighWaterLevel() [L684] int retValue_acc ; [L685] int tmp ; [L686] int tmp___0 ; [L690] CALL, EXPR isHighWaterSensorDry() [L808] int retValue_acc ; [L811] COND FALSE !(waterLevel < 2) [L815] retValue_acc = 0 [L816] return (retValue_acc); [L690] RET, EXPR isHighWaterSensorDry() [L690] tmp = isHighWaterSensorDry() [L692] COND FALSE !(\read(tmp)) [L695] tmp___0 = 1 [L697] retValue_acc = tmp___0 [L698] return (retValue_acc); [L566] RET, EXPR isHighWaterLevel() [L566] tmp = isHighWaterLevel() [L568] COND TRUE \read(tmp) [L570] CALL activatePump() [L615] pumpRunning = 1 [L570] RET activatePump() [L605] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) [L547] RET __utac_acc__Specification4_spec__1() [L504] RET timeShift() [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND TRUE \read(pumpRunning) [L534] CALL lowerWaterLevel() [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L534] RET lowerWaterLevel() [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L592] CALL, EXPR isMethaneAlarm() [L628] int retValue_acc ; [L632] CALL, EXPR isMethaneLevelCritical() [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] RET, EXPR isMethaneLevelCritical() [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] RET, EXPR isMethaneAlarm() [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L600] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L579] FCALL processEnvironment__wrappee__base() [L600] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) [L547] RET __utac_acc__Specification4_spec__1() [L504] RET timeShift() [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND TRUE \read(pumpRunning) [L534] CALL lowerWaterLevel() [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L534] RET lowerWaterLevel() [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L592] CALL, EXPR isMethaneAlarm() [L628] int retValue_acc ; [L632] CALL, EXPR isMethaneLevelCritical() [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] RET, EXPR isMethaneLevelCritical() [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] RET, EXPR isMethaneAlarm() [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L600] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L579] FCALL processEnvironment__wrappee__base() [L600] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND TRUE tmp == 0 [L928] CALL, EXPR isPumpRunning() [L639] int retValue_acc ; [L642] retValue_acc = pumpRunning [L643] return (retValue_acc); [L928] RET, EXPR isPumpRunning() [L928] tmp___0 = isPumpRunning() [L930] COND TRUE \read(tmp___0) [L932] CALL __automaton_fail() [L722] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 624 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 66.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 55.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2529 SDtfs, 6212 SDslu, 5858 SDs, 0 SdLazy, 13153 SolverSat, 2065 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 532 GetRequests, 334 SyntacticMatches, 9 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 25.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1429occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 906 StatesRemovedByMinimization, 10 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...