/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:45:53,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:45:53,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:45:53,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:45:53,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:45:53,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:45:53,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:45:53,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:45:53,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:45:53,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:45:53,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:45:53,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:45:53,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:45:53,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:45:53,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:45:53,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:45:53,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:45:53,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:45:53,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:45:53,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:45:53,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:45:53,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:45:53,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:45:53,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:45:53,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:45:53,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:45:53,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:45:53,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:45:53,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:45:53,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:45:53,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:45:53,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:45:53,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:45:53,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:45:53,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:45:53,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:45:53,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:45:53,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:45:53,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:45:53,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:45:53,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:45:53,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:45:53,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:45:53,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:45:53,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:45:53,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:45:53,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:45:53,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:45:53,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:45:53,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:45:53,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:45:53,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:45:53,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:45:53,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:45:53,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:45:53,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:45:53,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:45:53,420 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:45:53,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:45:53,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:45:53,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:45:53,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:45:53,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:45:53,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:45:53,424 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:45:53,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:45:53,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:45:53,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:45:53,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:45:53,920 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:45:53,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2021-02-21 19:45:54,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a83d6f8/626db4e461f84def97679fe7e39d49f2/FLAG8029627fe [2021-02-21 19:45:54,826 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:45:54,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2021-02-21 19:45:54,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a83d6f8/626db4e461f84def97679fe7e39d49f2/FLAG8029627fe [2021-02-21 19:45:55,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a83d6f8/626db4e461f84def97679fe7e39d49f2 [2021-02-21 19:45:55,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:45:55,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:45:55,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:45:55,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:45:55,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:45:55,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:45:55" (1/1) ... [2021-02-21 19:45:55,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16cb2d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:55, skipping insertion in model container [2021-02-21 19:45:55,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:45:55" (1/1) ... [2021-02-21 19:45:55,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:45:55,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:45:55,723 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c[14694,14707] [2021-02-21 19:45:55,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:45:55,834 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:45:55,978 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c[14694,14707] [2021-02-21 19:45:56,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:45:56,064 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:45:56,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56 WrapperNode [2021-02-21 19:45:56,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:45:56,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:45:56,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:45:56,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:45:56,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (1/1) ... [2021-02-21 19:45:56,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (1/1) ... [2021-02-21 19:45:56,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (1/1) ... [2021-02-21 19:45:56,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (1/1) ... [2021-02-21 19:45:56,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (1/1) ... [2021-02-21 19:45:56,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (1/1) ... [2021-02-21 19:45:56,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (1/1) ... [2021-02-21 19:45:56,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:45:56,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:45:56,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:45:56,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:45:56,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:45:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:45:56,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:45:56,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:45:56,347 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:45:56,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:45:56,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:45:56,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:45:56,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:45:56,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:45:56,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:45:56,351 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:45:56,351 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:45:56,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:45:56,352 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:45:56,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:45:56,353 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:45:56,353 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:45:56,353 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:45:56,354 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:45:56,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:45:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:45:56,359 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:45:56,359 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:45:56,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:45:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:45:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:45:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:45:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:45:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:45:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:45:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:45:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:45:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:45:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:45:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:45:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:45:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:45:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:45:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:45:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:45:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:45:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:45:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:45:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:45:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:45:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:45:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:45:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:45:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:45:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:45:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:45:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:45:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:45:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:45:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:45:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:45:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:45:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:45:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:45:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:45:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:45:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:45:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:45:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:45:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:45:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:45:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:45:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:45:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:45:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:45:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:45:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:45:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:45:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:45:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:45:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:45:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:45:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:45:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:45:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:45:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:45:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:45:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:45:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:45:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:45:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:45:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:45:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:45:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:45:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:45:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:45:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:45:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:45:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:45:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:45:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:45:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:45:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:45:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:45:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:45:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:45:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:45:58,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:45:58,046 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:45:58,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:45:58 BoogieIcfgContainer [2021-02-21 19:45:58,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:45:58,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:45:58,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:45:58,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:45:58,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:45:55" (1/3) ... [2021-02-21 19:45:58,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac531fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:45:58, skipping insertion in model container [2021-02-21 19:45:58,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:45:56" (2/3) ... [2021-02-21 19:45:58,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac531fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:45:58, skipping insertion in model container [2021-02-21 19:45:58,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:45:58" (3/3) ... [2021-02-21 19:45:58,062 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2021-02-21 19:45:58,070 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:45:58,078 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:45:58,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:45:58,133 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:45:58,133 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:45:58,133 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:45:58,134 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:45:58,134 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:45:58,134 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:45:58,134 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:45:58,134 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:45:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states. [2021-02-21 19:45:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:45:58,188 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:45:58,190 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] [2021-02-21 19:45:58,190 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:45:58,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:45:58,198 INFO L82 PathProgramCache]: Analyzing trace with hash 701478444, now seen corresponding path program 1 times [2021-02-21 19:45:58,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:45:58,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805390913] [2021-02-21 19:45:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:45:58,301 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:45:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:58,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:58,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:58,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:58,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:59,255 WARN L202 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:45:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:45:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:59,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:59,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:59,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:45:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:59,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:59,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:59,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:45:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:59,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:59,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:45:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:59,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:59,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:59,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:45:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:59,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:59,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:45:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:59,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:59,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:45:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:59,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:59,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:45:59,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805390913] [2021-02-21 19:45:59,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:45:59,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:45:59,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196004565] [2021-02-21 19:45:59,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:45:59,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:45:59,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:45:59,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:45:59,495 INFO L87 Difference]: Start difference. First operand 358 states. Second operand 3 states. [2021-02-21 19:46:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:46:01,824 INFO L93 Difference]: Finished difference Result 581 states and 690 transitions. [2021-02-21 19:46:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:46:01,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:46:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:46:01,847 INFO L225 Difference]: With dead ends: 581 [2021-02-21 19:46:01,847 INFO L226 Difference]: Without dead ends: 353 [2021-02-21 19:46:01,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:46:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-02-21 19:46:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 306. [2021-02-21 19:46:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2021-02-21 19:46:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 336 transitions. [2021-02-21 19:46:02,091 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 336 transitions. Word has length 147 [2021-02-21 19:46:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:46:02,092 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 336 transitions. [2021-02-21 19:46:02,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:46:02,093 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 336 transitions. [2021-02-21 19:46:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:46:02,098 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:46:02,099 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] [2021-02-21 19:46:02,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:46:02,099 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:46:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:46:02,100 INFO L82 PathProgramCache]: Analyzing trace with hash -445945027, now seen corresponding path program 1 times [2021-02-21 19:46:02,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:46:02,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60355285] [2021-02-21 19:46:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:46:02,105 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:46:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:02,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:02,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,624 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:46:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:46:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:02,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:46:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:02,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:46:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:02,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:46:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:02,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:46:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:02,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:46:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:02,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:46:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:02,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:02,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:46:02,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60355285] [2021-02-21 19:46:02,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:46:02,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:46:02,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028271154] [2021-02-21 19:46:02,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:46:02,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:46:02,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:46:02,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:46:02,744 INFO L87 Difference]: Start difference. First operand 306 states and 336 transitions. Second operand 4 states. [2021-02-21 19:46:03,615 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:46:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:46:05,356 INFO L93 Difference]: Finished difference Result 491 states and 556 transitions. [2021-02-21 19:46:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:46:05,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:46:05,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:46:05,363 INFO L225 Difference]: With dead ends: 491 [2021-02-21 19:46:05,364 INFO L226 Difference]: Without dead ends: 336 [2021-02-21 19:46:05,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:46:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-02-21 19:46:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 296. [2021-02-21 19:46:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-21 19:46:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 323 transitions. [2021-02-21 19:46:05,487 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 323 transitions. Word has length 148 [2021-02-21 19:46:05,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:46:05,488 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 323 transitions. [2021-02-21 19:46:05,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:46:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 323 transitions. [2021-02-21 19:46:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:46:05,491 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:46:05,491 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] [2021-02-21 19:46:05,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:46:05,492 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:46:05,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:46:05,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1656661846, now seen corresponding path program 1 times [2021-02-21 19:46:05,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:46:05,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927797349] [2021-02-21 19:46:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:46:05,497 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:46:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:05,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:05,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:05,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:05,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:05,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:05,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:05,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:05,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:05,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:05,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:05,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:05,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:05,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:05,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:05,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:05,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:06,046 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:46:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:46:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:06,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:06,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:46:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:46:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:06,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:06,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:46:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:06,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:46:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:06,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:06,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:46:06,244 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:46:06,247 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:46:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:46:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:06,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:46:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:06,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:06,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:46:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:06,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:06,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:46:06,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927797349] [2021-02-21 19:46:06,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:46:06,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:46:06,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49815327] [2021-02-21 19:46:06,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:46:06,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:46:06,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:46:06,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:46:06,404 INFO L87 Difference]: Start difference. First operand 296 states and 323 transitions. Second operand 9 states. [2021-02-21 19:46:07,281 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:46:07,810 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:46:08,224 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:46:08,634 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:46:09,107 WARN L202 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:46:09,496 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:46:10,726 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:46:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:46:14,533 INFO L93 Difference]: Finished difference Result 797 states and 920 transitions. [2021-02-21 19:46:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:46:14,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:46:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:46:14,541 INFO L225 Difference]: With dead ends: 797 [2021-02-21 19:46:14,541 INFO L226 Difference]: Without dead ends: 616 [2021-02-21 19:46:14,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:46:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-02-21 19:46:14,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 541. [2021-02-21 19:46:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2021-02-21 19:46:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 609 transitions. [2021-02-21 19:46:14,924 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 609 transitions. Word has length 157 [2021-02-21 19:46:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:46:14,928 INFO L480 AbstractCegarLoop]: Abstraction has 541 states and 609 transitions. [2021-02-21 19:46:14,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:46:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 609 transitions. [2021-02-21 19:46:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:46:14,939 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:46:14,941 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] [2021-02-21 19:46:14,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:46:14,942 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:46:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:46:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash 363088762, now seen corresponding path program 1 times [2021-02-21 19:46:14,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:46:14,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441963198] [2021-02-21 19:46:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:46:14,951 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:46:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:15,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:15,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:15,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:15,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:15,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:15,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:15,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:15,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:15,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:46:15,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,537 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:46:15,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:46:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:46:15,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:46:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:46:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:46:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:46:15,642 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:46:15,643 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:46:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:46:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:46:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:46:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:15,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:46:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:15,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:15,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:46:15,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441963198] [2021-02-21 19:46:15,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:46:15,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:46:15,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670616616] [2021-02-21 19:46:15,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:46:15,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:46:15,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:46:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:46:15,821 INFO L87 Difference]: Start difference. First operand 541 states and 609 transitions. Second operand 14 states. [2021-02-21 19:46:16,575 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:46:17,102 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:46:17,536 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:46:17,968 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:46:18,389 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:46:18,800 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:46:19,662 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:46:21,406 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:46:21,987 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:46:22,658 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:46:23,283 WARN L202 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:46:23,751 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:46:24,163 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:46:24,616 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:46:25,127 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:46:25,512 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:46:26,150 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:46:26,823 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:46:27,349 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:46:27,902 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:46:31,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:46:31,474 INFO L93 Difference]: Finished difference Result 1925 states and 2402 transitions. [2021-02-21 19:46:31,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:46:31,476 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:46:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:46:31,488 INFO L225 Difference]: With dead ends: 1925 [2021-02-21 19:46:31,488 INFO L226 Difference]: Without dead ends: 1499 [2021-02-21 19:46:31,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:46:31,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2021-02-21 19:46:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1356. [2021-02-21 19:46:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2021-02-21 19:46:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1610 transitions. [2021-02-21 19:46:32,321 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1610 transitions. Word has length 166 [2021-02-21 19:46:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:46:32,322 INFO L480 AbstractCegarLoop]: Abstraction has 1356 states and 1610 transitions. [2021-02-21 19:46:32,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:46:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1610 transitions. [2021-02-21 19:46:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:46:32,328 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:46:32,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:46:32,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:46:32,329 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:46:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:46:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash -682080007, now seen corresponding path program 1 times [2021-02-21 19:46:32,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:46:32,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228581235] [2021-02-21 19:46:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:46:32,334 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:46:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:32,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:32,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:32,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:32,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:32,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:32,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,782 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:46:32,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:46:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:32,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:46:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:46:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:46:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:46:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:46:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:46:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:46:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:46:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:46:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:46:32,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:32,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:46:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:46:32,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228581235] [2021-02-21 19:46:32,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:46:32,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:46:32,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821679128] [2021-02-21 19:46:32,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:46:32,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:46:32,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:46:32,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:46:32,935 INFO L87 Difference]: Start difference. First operand 1356 states and 1610 transitions. Second operand 6 states. [2021-02-21 19:46:33,637 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:46:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:46:37,657 INFO L93 Difference]: Finished difference Result 3103 states and 3883 transitions. [2021-02-21 19:46:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:46:37,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:46:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:46:37,675 INFO L225 Difference]: With dead ends: 3103 [2021-02-21 19:46:37,675 INFO L226 Difference]: Without dead ends: 1862 [2021-02-21 19:46:37,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:46:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-02-21 19:46:38,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1739. [2021-02-21 19:46:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1739 states. [2021-02-21 19:46:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2033 transitions. [2021-02-21 19:46:38,729 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2033 transitions. Word has length 171 [2021-02-21 19:46:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:46:38,729 INFO L480 AbstractCegarLoop]: Abstraction has 1739 states and 2033 transitions. [2021-02-21 19:46:38,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:46:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2033 transitions. [2021-02-21 19:46:38,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:46:38,738 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:46:38,739 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] [2021-02-21 19:46:38,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:46:38,740 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:46:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:46:38,740 INFO L82 PathProgramCache]: Analyzing trace with hash 624731870, now seen corresponding path program 1 times [2021-02-21 19:46:38,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:46:38,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228333908] [2021-02-21 19:46:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:46:39,575 WARN L202 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 123 [2021-02-21 19:46:39,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:46:39,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 282