/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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:46:25,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:46:25,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:46:25,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:46:25,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:46:25,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:46:25,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:46:25,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:46:25,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:46:25,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:46:25,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:46:25,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:46:25,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:46:25,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:46:25,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:46:25,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:46:25,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:46:25,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:46:25,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:46:25,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:46:25,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:46:25,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:46:25,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:46:25,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:46:25,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:46:25,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:46:25,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:46:25,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:46:25,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:46:25,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:46:25,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:46:25,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:46:25,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:46:25,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:46:25,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:46:25,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:46:25,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:46:25,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:46:25,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:46:25,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:46:25,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:46:25,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:46:25,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:46:25,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:46:25,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:46:25,648 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:46:25,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:46:25,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:46:25,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:46:25,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:46:25,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:46:25,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:46:25,650 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:46:25,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:46:25,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:46:25,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:46:25,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:46:25,651 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:46:25,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:46:25,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:46:25,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:46:25,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:46:25,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:46:25,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:46:25,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:46:26,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:46:26,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:46:26,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:46:26,047 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:46:26,048 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:46:26,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product26.cil.c [2021-02-23 16:46:26,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02501843f/37c6993dbb084f828bd318a56350a23d/FLAGbd88dbe7d [2021-02-23 16:46:26,784 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:46:26,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product26.cil.c [2021-02-23 16:46:26,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02501843f/37c6993dbb084f828bd318a56350a23d/FLAGbd88dbe7d [2021-02-23 16:46:27,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02501843f/37c6993dbb084f828bd318a56350a23d [2021-02-23 16:46:27,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:46:27,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:46:27,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:46:27,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:46:27,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:46:27,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6561faff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27, skipping insertion in model container [2021-02-23 16:46:27,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:46:27,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:46:27,342 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_product26.cil.c[1281,1294] [2021-02-23 16:46:27,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:46:27,551 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:46:27,579 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_product26.cil.c[1281,1294] [2021-02-23 16:46:27,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:46:27,743 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:46:27,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27 WrapperNode [2021-02-23 16:46:27,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:46:27,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:46:27,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:46:27,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:46:27,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (1/1) ... [2021-02-23 16:46:27,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:46:27,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:46:27,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:46:27,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:46:27,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (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 [2021-02-23 16:46:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:46:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:46:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:46:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:46:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:46:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:46:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:46:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:46:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:46:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:46:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:46:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:46:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:46:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:46:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:46:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:46:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:46:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:46:28,018 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:46:28,018 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:46:28,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:46:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:46:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:46:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:46:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:46:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:46:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:46:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:46:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:46:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:46:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:46:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:46:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:46:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:46:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:46:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:46:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:46:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:46:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:46:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:46:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:46:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:46:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:46:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:46:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:46:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:46:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:46:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:46:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:46:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:46:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:46:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:46:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:46:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:46:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:46:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:46:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:46:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:46:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:46:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:46:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:46:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:46:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:46:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:46:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:46:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:46:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:46:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:46:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:46:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:46:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:46:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:46:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:46:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:46:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:46:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:46:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:46:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:46:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:46:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:46:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:46:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:46:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:46:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:46:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:46:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:46:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:46:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:46:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:46:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:46:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:46:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:46:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:46:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:46:29,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:46:29,162 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:46:29,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:46:29 BoogieIcfgContainer [2021-02-23 16:46:29,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:46:29,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:46:29,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:46:29,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:46:29,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:46:27" (1/3) ... [2021-02-23 16:46:29,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3fe305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:46:29, skipping insertion in model container [2021-02-23 16:46:29,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:46:27" (2/3) ... [2021-02-23 16:46:29,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3fe305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:46:29, skipping insertion in model container [2021-02-23 16:46:29,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:46:29" (3/3) ... [2021-02-23 16:46:29,174 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product26.cil.c [2021-02-23 16:46:29,181 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:46:29,187 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:46:29,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:46:29,231 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:46:29,232 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:46:29,232 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:46:29,232 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:46:29,232 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:46:29,232 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:46:29,232 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:46:29,233 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:46:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-02-23 16:46:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:46:29,276 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:46:29,277 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] [2021-02-23 16:46:29,277 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:46:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:46:29,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1975133697, now seen corresponding path program 1 times [2021-02-23 16:46:29,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:46:29,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560044245] [2021-02-23 16:46:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:46:29,379 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:46:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:29,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:29,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:29,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:29,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:30,099 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:46:30,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:46:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:30,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:30,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:46:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:30,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:30,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:46:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:30,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:30,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:46:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:30,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:30,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:46:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:30,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:30,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:46:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:30,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:30,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:46:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:30,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:30,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:46:30,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560044245] [2021-02-23 16:46:30,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:46:30,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:46:30,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059579739] [2021-02-23 16:46:30,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:46:30,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:46:30,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:46:30,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:46:30,290 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-02-23 16:46:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:46:31,684 INFO L93 Difference]: Finished difference Result 428 states and 509 transitions. [2021-02-23 16:46:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:46:31,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:46:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:46:31,703 INFO L225 Difference]: With dead ends: 428 [2021-02-23 16:46:31,703 INFO L226 Difference]: Without dead ends: 273 [2021-02-23 16:46:31,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:46:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-02-23 16:46:31,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 233. [2021-02-23 16:46:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-02-23 16:46:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 250 transitions. [2021-02-23 16:46:31,920 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 250 transitions. Word has length 147 [2021-02-23 16:46:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:46:31,921 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 250 transitions. [2021-02-23 16:46:31,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:46:31,921 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 250 transitions. [2021-02-23 16:46:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:46:31,926 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:46:31,926 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] [2021-02-23 16:46:31,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:46:31,927 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:46:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:46:31,928 INFO L82 PathProgramCache]: Analyzing trace with hash 896946953, now seen corresponding path program 1 times [2021-02-23 16:46:31,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:46:31,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753127182] [2021-02-23 16:46:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:46:31,933 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:46:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:32,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:32,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,386 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:46:32,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:46:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:32,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:46:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:32,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:46:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:32,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:46:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:32,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:46:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:32,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:46:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:32,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:46:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:32,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:32,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:46:32,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753127182] [2021-02-23 16:46:32,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:46:32,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:46:32,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557476388] [2021-02-23 16:46:32,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:46:32,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:46:32,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:46:32,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:46:32,513 INFO L87 Difference]: Start difference. First operand 233 states and 250 transitions. Second operand 4 states. [2021-02-23 16:46:33,264 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:46:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:46:34,055 INFO L93 Difference]: Finished difference Result 340 states and 379 transitions. [2021-02-23 16:46:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:46:34,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:46:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:46:34,060 INFO L225 Difference]: With dead ends: 340 [2021-02-23 16:46:34,061 INFO L226 Difference]: Without dead ends: 256 [2021-02-23 16:46:34,063 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 [2021-02-23 16:46:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-02-23 16:46:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 223. [2021-02-23 16:46:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-23 16:46:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 237 transitions. [2021-02-23 16:46:34,141 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 237 transitions. Word has length 148 [2021-02-23 16:46:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:46:34,142 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 237 transitions. [2021-02-23 16:46:34,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:46:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 237 transitions. [2021-02-23 16:46:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:46:34,144 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:46:34,145 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] [2021-02-23 16:46:34,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:46:34,145 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:46:34,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:46:34,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2054905789, now seen corresponding path program 1 times [2021-02-23 16:46:34,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:46:34,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564798120] [2021-02-23 16:46:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:46:34,150 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:46:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:34,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:34,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:46:34,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,613 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:46:34,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:46:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:46:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:46:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:46:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:46:34,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:46:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:46:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:46:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:46:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:46:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:34,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:34,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:46:34,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564798120] [2021-02-23 16:46:34,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:46:34,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:46:34,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369098334] [2021-02-23 16:46:34,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:46:34,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:46:34,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:46:34,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:46:34,783 INFO L87 Difference]: Start difference. First operand 223 states and 237 transitions. Second operand 10 states. [2021-02-23 16:46:35,483 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:46:35,922 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:46:36,297 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:46:36,690 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:46:37,047 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:46:37,400 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:46:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:46:38,870 INFO L93 Difference]: Finished difference Result 386 states and 441 transitions. [2021-02-23 16:46:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:46:38,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:46:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:46:38,874 INFO L225 Difference]: With dead ends: 386 [2021-02-23 16:46:38,874 INFO L226 Difference]: Without dead ends: 278 [2021-02-23 16:46:38,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:46:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-23 16:46:38,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 223. [2021-02-23 16:46:38,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-23 16:46:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 236 transitions. [2021-02-23 16:46:38,962 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 236 transitions. Word has length 161 [2021-02-23 16:46:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:46:38,963 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 236 transitions. [2021-02-23 16:46:38,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:46:38,963 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 236 transitions. [2021-02-23 16:46:38,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-23 16:46:38,965 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:46:38,965 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] [2021-02-23 16:46:38,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:46:38,966 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:46:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:46:38,967 INFO L82 PathProgramCache]: Analyzing trace with hash -654249008, now seen corresponding path program 1 times [2021-02-23 16:46:38,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:46:38,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364505213] [2021-02-23 16:46:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:46:38,970 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:46:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:39,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:39,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:39,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:39,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:46:39,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:46:39,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:46:39,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:46:39,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:46:39,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:46:39,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,437 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:46:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:46:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:46:39,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:46:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:46:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:46:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:46:39,528 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:46:39,529 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:46:39,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:46:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:46:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:46:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:46:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:46:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:39,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:39,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:46:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:39,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:39,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:46:39,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364505213] [2021-02-23 16:46:39,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:46:39,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 16:46:39,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113702626] [2021-02-23 16:46:39,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 16:46:39,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:46:39,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 16:46:39,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:46:39,681 INFO L87 Difference]: Start difference. First operand 223 states and 236 transitions. Second operand 15 states. [2021-02-23 16:46:40,312 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:46:40,790 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:46:41,131 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:46:41,543 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:46:41,913 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:46:42,268 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:46:43,046 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:46:44,248 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:46:44,627 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:46:45,050 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:46:45,506 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:46:45,882 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:46:46,234 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:46:46,600 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:46:46,923 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:46:47,293 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:46:47,700 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:46:48,196 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:46:48,586 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:46:49,011 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:46:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:46:51,228 INFO L93 Difference]: Finished difference Result 762 states and 962 transitions. [2021-02-23 16:46:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 16:46:51,228 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2021-02-23 16:46:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:46:51,235 INFO L225 Difference]: With dead ends: 762 [2021-02-23 16:46:51,235 INFO L226 Difference]: Without dead ends: 654 [2021-02-23 16:46:51,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 16:46:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-02-23 16:46:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 415. [2021-02-23 16:46:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2021-02-23 16:46:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 456 transitions. [2021-02-23 16:46:51,431 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 456 transitions. Word has length 169 [2021-02-23 16:46:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:46:51,431 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 456 transitions. [2021-02-23 16:46:51,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 16:46:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 456 transitions. [2021-02-23 16:46:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-23 16:46:51,434 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:46:51,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:46:51,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:46:51,435 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:46:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:46:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1279001198, now seen corresponding path program 1 times [2021-02-23 16:46:51,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:46:51,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927411918] [2021-02-23 16:46:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:46:51,439 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:46:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:51,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:51,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:51,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:51,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:51,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,802 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:46:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:46:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:46:51,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:46:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:46:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:46:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:46:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:46:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:46:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:46:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:46:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 16:46:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-23 16:46:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:46:51,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:51,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:46:52,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927411918] [2021-02-23 16:46:52,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:46:52,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:46:52,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879455970] [2021-02-23 16:46:52,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:46:52,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:46:52,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:46:52,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:46:52,032 INFO L87 Difference]: Start difference. First operand 415 states and 456 transitions. Second operand 7 states. [2021-02-23 16:46:52,658 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:46:53,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:46:53,702 INFO L93 Difference]: Finished difference Result 695 states and 809 transitions. [2021-02-23 16:46:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:46:53,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-23 16:46:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:46:53,706 INFO L225 Difference]: With dead ends: 695 [2021-02-23 16:46:53,706 INFO L226 Difference]: Without dead ends: 395 [2021-02-23 16:46:53,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:46:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-23 16:46:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 308. [2021-02-23 16:46:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-02-23 16:46:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 325 transitions. [2021-02-23 16:46:53,823 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 325 transitions. Word has length 174 [2021-02-23 16:46:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:46:53,823 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 325 transitions. [2021-02-23 16:46:53,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:46:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 325 transitions. [2021-02-23 16:46:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-02-23 16:46:53,827 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:46:53,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:46:53,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:46:53,828 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:46:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:46:53,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1998599568, now seen corresponding path program 1 times [2021-02-23 16:46:53,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:46:53,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65278312] [2021-02-23 16:46:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:46:53,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:53,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:53,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:53,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:53,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:53,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:46:54,509 WARN L202 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 103 [2021-02-23 16:46:54,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:54,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-02-23 16:46:54,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:46:54,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1