/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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:15:30,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:15:30,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:15:30,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:15:30,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:15:30,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:15:30,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:15:30,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:15:30,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:15:30,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:15:30,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:15:30,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:15:30,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:15:30,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:15:30,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:15:30,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:15:30,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:15:30,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:15:30,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:15:30,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:15:30,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:15:30,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:15:30,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:15:30,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:15:30,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:15:30,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:15:30,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:15:30,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:15:30,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:15:30,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:15:30,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:15:30,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:15:30,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:15:30,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:15:31,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:15:31,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:15:31,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:15:31,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:15:31,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:15:31,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:15:31,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:15:31,007 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 19:15:31,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:15:31,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:15:31,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:15:31,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:15:31,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:15:31,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:15:31,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:15:31,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:15:31,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:15:31,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:15:31,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:15:31,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:15:31,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:15:31,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:15:31,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:15:31,025 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:15:31,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:15:31,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:15:31,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:15:31,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:15:31,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:15:31,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:15:31,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:15:31,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:15:31,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:15:31,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:15:31,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:15:31,478 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:15:31,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c [2021-02-21 19:15:31,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949cde30c/cd176a5307b9417c93d7d07b4c05921e/FLAG7b3afb3a3 [2021-02-21 19:15:32,319 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:15:32,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c [2021-02-21 19:15:32,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949cde30c/cd176a5307b9417c93d7d07b4c05921e/FLAG7b3afb3a3 [2021-02-21 19:15:32,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949cde30c/cd176a5307b9417c93d7d07b4c05921e [2021-02-21 19:15:32,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:15:32,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:15:32,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:15:32,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:15:32,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:15:32,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:15:32" (1/1) ... [2021-02-21 19:15:32,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24caf98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:32, skipping insertion in model container [2021-02-21 19:15:32,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:15:32" (1/1) ... [2021-02-21 19:15:32,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:15:32,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:15:33,080 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_product20.cil.c[14037,14050] [2021-02-21 19:15:33,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:33,146 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:15:33,216 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_product20.cil.c[14037,14050] [2021-02-21 19:15:33,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:33,271 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:15:33,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33 WrapperNode [2021-02-21 19:15:33,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:15:33,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:15:33,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:15:33,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:15:33,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (1/1) ... [2021-02-21 19:15:33,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (1/1) ... [2021-02-21 19:15:33,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (1/1) ... [2021-02-21 19:15:33,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (1/1) ... [2021-02-21 19:15:33,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (1/1) ... [2021-02-21 19:15:33,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (1/1) ... [2021-02-21 19:15:33,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (1/1) ... [2021-02-21 19:15:33,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:15:33,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:15:33,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:15:33,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:15:33,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (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 19:15:33,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:15:33,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:15:33,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:33,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:15:33,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:15:33,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:15:33,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:15:33,571 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:15:33,571 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:15:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:15:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:15:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:15:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:15:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:15:33,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:15:33,573 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:15:33,573 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:15:33,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:15:33,573 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:15:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:15:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:15:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:15:33,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:15:33,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:15:33,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:33,575 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:15:33,575 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:15:33,576 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:15:33,576 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:15:33,576 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:15:33,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:15:33,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:15:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:15:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:15:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:15:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:15:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:15:33,577 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:15:33,578 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:15:33,578 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:15:33,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:15:33,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:15:33,578 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:15:33,578 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:15:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:15:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:15:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:15:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:15:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:15:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:15:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:15:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:15:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:15:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:15:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:15:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:15:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:15:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:15:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:15:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:15:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:15:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:15:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:15:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:15:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:15:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:15:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:15:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:15:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:15:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:15:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:15:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:15:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:15:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:15:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:15:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:15:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:15:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:15:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:15:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:15:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:15:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:15:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:15:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:15:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:15:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:15:35,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:15:35,312 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:15:35,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:35 BoogieIcfgContainer [2021-02-21 19:15:35,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:15:35,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:15:35,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:15:35,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:15:35,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:15:32" (1/3) ... [2021-02-21 19:15:35,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba0129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:15:35, skipping insertion in model container [2021-02-21 19:15:35,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:33" (2/3) ... [2021-02-21 19:15:35,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba0129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:15:35, skipping insertion in model container [2021-02-21 19:15:35,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:35" (3/3) ... [2021-02-21 19:15:35,333 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product20.cil.c [2021-02-21 19:15:35,341 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:15:35,348 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:15:35,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:15:35,410 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:15:35,410 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:15:35,410 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:15:35,411 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:15:35,412 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:15:35,412 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:15:35,412 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:15:35,412 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:15:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-21 19:15:35,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:15:35,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:35,487 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 19:15:35,488 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:35,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:35,498 INFO L82 PathProgramCache]: Analyzing trace with hash -604275891, now seen corresponding path program 1 times [2021-02-21 19:15:35,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:35,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897045461] [2021-02-21 19:15:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:35,605 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:36,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:36,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:36,843 WARN L202 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:36,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:36,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:36,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:36,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:36,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:36,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:15:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:36,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:15:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:36,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:36,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:37,014 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 19:15:37,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897045461] [2021-02-21 19:15:37,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:37,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:15:37,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967149381] [2021-02-21 19:15:37,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:15:37,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:37,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:15:37,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:15:37,041 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-21 19:15:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:38,686 INFO L93 Difference]: Finished difference Result 442 states and 528 transitions. [2021-02-21 19:15:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:15:38,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:15:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:38,717 INFO L225 Difference]: With dead ends: 442 [2021-02-21 19:15:38,718 INFO L226 Difference]: Without dead ends: 281 [2021-02-21 19:15:38,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:15:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-21 19:15:38,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2021-02-21 19:15:38,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-21 19:15:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 258 transitions. [2021-02-21 19:15:38,914 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 258 transitions. Word has length 147 [2021-02-21 19:15:38,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:38,915 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 258 transitions. [2021-02-21 19:15:38,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:15:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 258 transitions. [2021-02-21 19:15:38,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:15:38,919 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:38,919 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 19:15:38,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:15:38,920 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1069949183, now seen corresponding path program 1 times [2021-02-21 19:15:38,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:38,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917427614] [2021-02-21 19:15:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:38,926 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:39,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:39,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,384 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:39,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:39,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:39,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:39,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:39,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:39,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:15:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:39,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:15:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:39,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:39,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:39,500 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 19:15:39,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917427614] [2021-02-21 19:15:39,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:39,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:15:39,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491277088] [2021-02-21 19:15:39,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:15:39,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:39,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:15:39,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:15:39,504 INFO L87 Difference]: Start difference. First operand 239 states and 258 transitions. Second operand 4 states. [2021-02-21 19:15:40,253 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:41,188 INFO L93 Difference]: Finished difference Result 348 states and 390 transitions. [2021-02-21 19:15:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:15:41,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:15:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:41,193 INFO L225 Difference]: With dead ends: 348 [2021-02-21 19:15:41,193 INFO L226 Difference]: Without dead ends: 264 [2021-02-21 19:15:41,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:15:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-21 19:15:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2021-02-21 19:15:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-21 19:15:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 245 transitions. [2021-02-21 19:15:41,279 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 245 transitions. Word has length 148 [2021-02-21 19:15:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:41,279 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 245 transitions. [2021-02-21 19:15:41,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:15:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 245 transitions. [2021-02-21 19:15:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:15:41,282 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:41,282 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] [2021-02-21 19:15:41,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:15:41,282 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:41,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:41,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1222276472, now seen corresponding path program 1 times [2021-02-21 19:15:41,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:41,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717890548] [2021-02-21 19:15:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:41,288 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:41,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:41,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:41,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,779 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:41,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:41,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:15:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:15:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:15:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,952 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 19:15:41,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717890548] [2021-02-21 19:15:41,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:41,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:15:41,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7958485] [2021-02-21 19:15:41,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:15:41,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:41,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:15:41,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:15:41,955 INFO L87 Difference]: Start difference. First operand 229 states and 245 transitions. Second operand 10 states. [2021-02-21 19:15:42,664 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:43,096 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:43,492 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:15:43,883 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:44,230 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:44,619 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:45,698 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:47,828 INFO L93 Difference]: Finished difference Result 608 states and 709 transitions. [2021-02-21 19:15:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:15:47,829 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:15:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:47,841 INFO L225 Difference]: With dead ends: 608 [2021-02-21 19:15:47,841 INFO L226 Difference]: Without dead ends: 494 [2021-02-21 19:15:47,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:15:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-02-21 19:15:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 403. [2021-02-21 19:15:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-21 19:15:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 449 transitions. [2021-02-21 19:15:48,013 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 449 transitions. Word has length 161 [2021-02-21 19:15:48,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:48,014 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 449 transitions. [2021-02-21 19:15:48,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:15:48,014 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 449 transitions. [2021-02-21 19:15:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:15:48,017 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:48,017 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 19:15:48,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:15:48,018 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1706589513, now seen corresponding path program 1 times [2021-02-21 19:15:48,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:48,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555537528] [2021-02-21 19:15:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:48,026 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:48,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:48,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:48,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:48,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:48,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:48,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:48,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:48,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:48,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:48,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,514 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:15:48,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:48,622 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:15:48,623 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:15:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:15:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:15:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:48,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:48,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:15:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:48,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:48,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:48,748 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 19:15:48,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555537528] [2021-02-21 19:15:48,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:48,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:15:48,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428451524] [2021-02-21 19:15:48,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:15:48,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:48,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:15:48,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:15:48,751 INFO L87 Difference]: Start difference. First operand 403 states and 449 transitions. Second operand 14 states. [2021-02-21 19:15:49,380 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:49,829 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:50,163 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:50,566 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:50,949 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:51,345 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:52,154 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:53,414 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:53,830 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:54,346 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:54,772 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:55,163 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:55,535 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:15:55,918 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:56,284 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:56,654 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:57,121 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:57,596 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:15:58,008 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:58,493 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:00,409 INFO L93 Difference]: Finished difference Result 1343 states and 1650 transitions. [2021-02-21 19:16:00,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:16:00,410 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:16:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:00,419 INFO L225 Difference]: With dead ends: 1343 [2021-02-21 19:16:00,419 INFO L226 Difference]: Without dead ends: 1055 [2021-02-21 19:16:00,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:16:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-02-21 19:16:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 916. [2021-02-21 19:16:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2021-02-21 19:16:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1058 transitions. [2021-02-21 19:16:00,860 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1058 transitions. Word has length 166 [2021-02-21 19:16:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:00,861 INFO L480 AbstractCegarLoop]: Abstraction has 916 states and 1058 transitions. [2021-02-21 19:16:00,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:16:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1058 transitions. [2021-02-21 19:16:00,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:16:00,865 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:00,865 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 19:16:00,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:16:00,866 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:00,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:00,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1905469108, now seen corresponding path program 1 times [2021-02-21 19:16:00,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:00,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580799880] [2021-02-21 19:16:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:00,870 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:00,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:00,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:00,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:00,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:00,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:00,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:00,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:00,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:00,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:00,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:00,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:00,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:00,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:00,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,267 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:01,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:16:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:16:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:16:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:16:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:01,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:01,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:01,486 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 19:16:01,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580799880] [2021-02-21 19:16:01,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:01,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:16:01,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265835138] [2021-02-21 19:16:01,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:16:01,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:01,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:16:01,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:16:01,495 INFO L87 Difference]: Start difference. First operand 916 states and 1058 transitions. Second operand 6 states. [2021-02-21 19:16:02,089 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:03,400 INFO L93 Difference]: Finished difference Result 1559 states and 1878 transitions. [2021-02-21 19:16:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:16:03,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:16:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:03,407 INFO L225 Difference]: With dead ends: 1559 [2021-02-21 19:16:03,407 INFO L226 Difference]: Without dead ends: 758 [2021-02-21 19:16:03,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:16:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-02-21 19:16:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 655. [2021-02-21 19:16:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2021-02-21 19:16:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 714 transitions. [2021-02-21 19:16:03,750 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 714 transitions. Word has length 171 [2021-02-21 19:16:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:03,751 INFO L480 AbstractCegarLoop]: Abstraction has 655 states and 714 transitions. [2021-02-21 19:16:03,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:16:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 714 transitions. [2021-02-21 19:16:03,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:16:03,755 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:03,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:03,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:16:03,756 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:03,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:03,757 INFO L82 PathProgramCache]: Analyzing trace with hash 485450763, now seen corresponding path program 1 times [2021-02-21 19:16:03,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:03,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702157610] [2021-02-21 19:16:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY