/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 00:43:20,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 00:43:20,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 00:43:20,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 00:43:20,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 00:43:20,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 00:43:20,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 00:43:20,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 00:43:20,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 00:43:20,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 00:43:20,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 00:43:20,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 00:43:20,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 00:43:20,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 00:43:20,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 00:43:20,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 00:43:20,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 00:43:20,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 00:43:20,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 00:43:20,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 00:43:20,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 00:43:20,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 00:43:20,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 00:43:20,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 00:43:20,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 00:43:20,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 00:43:20,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 00:43:20,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 00:43:20,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 00:43:20,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-02-22 00:43:20,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 00:43:20,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 00:43:20,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 00:43:20,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 00:43:20,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 00:43:20,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 00:43:20,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 00:43:20,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 00:43:20,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 00:43:20,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 00:43:20,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 00:43:20,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 00:43:20,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 00:43:20,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 00:43:20,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 00:43:20,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 00:43:20,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 00:43:20,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 00:43:20,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 00:43:20,556 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 00:43:20,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 00:43:20,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 00:43:20,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:43:20,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 00:43:20,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 00:43:20,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 00:43:20,558 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 00:43:20,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 00:43:20,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 00:43:21,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 00:43:21,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 00:43:21,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 00:43:21,013 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 00:43:21,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2021-02-22 00:43:21,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b87cb34/48b10e34e8444980a8f26b3b10d431e8/FLAG259944065 [2021-02-22 00:43:21,665 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 00:43:21,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2021-02-22 00:43:21,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b87cb34/48b10e34e8444980a8f26b3b10d431e8/FLAG259944065 [2021-02-22 00:43:21,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b87cb34/48b10e34e8444980a8f26b3b10d431e8 [2021-02-22 00:43:22,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 00:43:22,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 00:43:22,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 00:43:22,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 00:43:22,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 00:43:22,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:43:21" (1/1) ... [2021-02-22 00:43:22,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3694e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22, skipping insertion in model container [2021-02-22 00:43:22,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:43:21" (1/1) ... [2021-02-22 00:43:22,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 00:43:22,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 00:43:22,314 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_spec1_product34.cil.c[12260,12273] [2021-02-22 00:43:22,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:43:22,409 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 00:43:22,509 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_spec1_product34.cil.c[12260,12273] [2021-02-22 00:43:22,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:43:22,565 INFO L208 MainTranslator]: Completed translation [2021-02-22 00:43:22,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22 WrapperNode [2021-02-22 00:43:22,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 00:43:22,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 00:43:22,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 00:43:22,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 00:43:22,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (1/1) ... [2021-02-22 00:43:22,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (1/1) ... [2021-02-22 00:43:22,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (1/1) ... [2021-02-22 00:43:22,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (1/1) ... [2021-02-22 00:43:22,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (1/1) ... [2021-02-22 00:43:22,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (1/1) ... [2021-02-22 00:43:22,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (1/1) ... [2021-02-22 00:43:22,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 00:43:22,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 00:43:22,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 00:43:22,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 00:43:22,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (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 [2021-02-22 00:43:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 00:43:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 00:43:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 00:43:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 00:43:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 00:43:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 00:43:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 00:43:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 00:43:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 00:43:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 00:43:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 00:43:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 00:43:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 00:43:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 00:43:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 00:43:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 00:43:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 00:43:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 00:43:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 00:43:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 00:43:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 00:43:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 00:43:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 00:43:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 00:43:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 00:43:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 00:43:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 00:43:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 00:43:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 00:43:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 00:43:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 00:43:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 00:43:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 00:43:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 00:43:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:43:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 00:43:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 00:43:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 00:43:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 00:43:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 00:43:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 00:43:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 00:43:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 00:43:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 00:43:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 00:43:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 00:43:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 00:43:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 00:43:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 00:43:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 00:43:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 00:43:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 00:43:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 00:43:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 00:43:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 00:43:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 00:43:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 00:43:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 00:43:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 00:43:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 00:43:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 00:43:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 00:43:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 00:43:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 00:43:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 00:43:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 00:43:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 00:43:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 00:43:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 00:43:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 00:43:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 00:43:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 00:43:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 00:43:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 00:43:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 00:43:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 00:43:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 00:43:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 00:43:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 00:43:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 00:43:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 00:43:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 00:43:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 00:43:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:43:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 00:43:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 00:43:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 00:43:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 00:43:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 00:43:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 00:43:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 00:43:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 00:43:23,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 00:43:23,915 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 00:43:23,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:43:23 BoogieIcfgContainer [2021-02-22 00:43:23,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 00:43:23,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 00:43:23,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 00:43:23,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 00:43:23,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 12:43:21" (1/3) ... [2021-02-22 00:43:23,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d5c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:43:23, skipping insertion in model container [2021-02-22 00:43:23,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:22" (2/3) ... [2021-02-22 00:43:23,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d5c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:43:23, skipping insertion in model container [2021-02-22 00:43:23,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:43:23" (3/3) ... [2021-02-22 00:43:23,932 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2021-02-22 00:43:23,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 00:43:23,948 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 00:43:23,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 00:43:24,001 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 00:43:24,002 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 00:43:24,002 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 00:43:24,002 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 00:43:24,003 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 00:43:24,003 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 00:43:24,003 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 00:43:24,003 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 00:43:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states. [2021-02-22 00:43:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-22 00:43:24,060 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:24,061 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] [2021-02-22 00:43:24,061 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:24,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2146237448, now seen corresponding path program 1 times [2021-02-22 00:43:24,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:24,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562623537] [2021-02-22 00:43:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:24,155 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:24,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:24,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:24,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:24,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:24,799 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:24,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:24,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:24,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:24,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:24,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:24,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:24,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:24,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:24,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:24,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:24,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:24,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:24,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:24,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:43:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:24,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:24,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-22 00:43:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:25,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:25,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:25,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562623537] [2021-02-22 00:43:25,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:25,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 00:43:25,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443824654] [2021-02-22 00:43:25,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 00:43:25,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:25,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 00:43:25,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:43:25,060 INFO L87 Difference]: Start difference. First operand 294 states. Second operand 3 states. [2021-02-22 00:43:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:26,550 INFO L93 Difference]: Finished difference Result 434 states and 517 transitions. [2021-02-22 00:43:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 00:43:26,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-22 00:43:26,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:26,568 INFO L225 Difference]: With dead ends: 434 [2021-02-22 00:43:26,568 INFO L226 Difference]: Without dead ends: 276 [2021-02-22 00:43:26,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:43:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-22 00:43:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 236. [2021-02-22 00:43:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-22 00:43:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 254 transitions. [2021-02-22 00:43:26,748 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 254 transitions. Word has length 147 [2021-02-22 00:43:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:26,749 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 254 transitions. [2021-02-22 00:43:26,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 00:43:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 254 transitions. [2021-02-22 00:43:26,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-22 00:43:26,755 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:26,755 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] [2021-02-22 00:43:26,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 00:43:26,756 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:26,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:26,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1240697898, now seen corresponding path program 1 times [2021-02-22 00:43:26,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:26,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558780357] [2021-02-22 00:43:26,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:26,763 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:26,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:26,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:26,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:26,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:26,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:26,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:27,303 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:27,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:27,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:27,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:27,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:27,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:27,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:27,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:27,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:27,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:27,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:27,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:27,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 00:43:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:27,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:27,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:27,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:43:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:27,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:27,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:27,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558780357] [2021-02-22 00:43:27,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:27,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 00:43:27,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855356824] [2021-02-22 00:43:27,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 00:43:27,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:27,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 00:43:27,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 00:43:27,484 INFO L87 Difference]: Start difference. First operand 236 states and 254 transitions. Second operand 4 states. [2021-02-22 00:43:28,335 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:29,262 INFO L93 Difference]: Finished difference Result 346 states and 387 transitions. [2021-02-22 00:43:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 00:43:29,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-22 00:43:29,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:29,267 INFO L225 Difference]: With dead ends: 346 [2021-02-22 00:43:29,268 INFO L226 Difference]: Without dead ends: 259 [2021-02-22 00:43:29,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 00:43:29,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-22 00:43:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 226. [2021-02-22 00:43:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-02-22 00:43:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 241 transitions. [2021-02-22 00:43:29,400 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 241 transitions. Word has length 148 [2021-02-22 00:43:29,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:29,403 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 241 transitions. [2021-02-22 00:43:29,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 00:43:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 241 transitions. [2021-02-22 00:43:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-22 00:43:29,410 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:29,410 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] [2021-02-22 00:43:29,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 00:43:29,411 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:29,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2018752551, now seen corresponding path program 1 times [2021-02-22 00:43:29,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:29,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115516272] [2021-02-22 00:43:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:29,422 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:29,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:29,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:29,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:29,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:29,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:29,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:29,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:29,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:29,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:29,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:43:29,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:29,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:29,982 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:30,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:30,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:30,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:30,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:30,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:30,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:30,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:30,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:30,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:30,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:43:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:30,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:30,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-22 00:43:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:30,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 00:43:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:30,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:30,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:30,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115516272] [2021-02-22 00:43:30,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:30,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:43:30,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899343231] [2021-02-22 00:43:30,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:43:30,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:30,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:43:30,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:43:30,150 INFO L87 Difference]: Start difference. First operand 226 states and 241 transitions. Second operand 10 states. [2021-02-22 00:43:30,831 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:31,299 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:43:31,741 WARN L202 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:43:32,137 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:32,557 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:43:32,955 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:34,478 INFO L93 Difference]: Finished difference Result 392 states and 449 transitions. [2021-02-22 00:43:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 00:43:34,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-22 00:43:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:34,482 INFO L225 Difference]: With dead ends: 392 [2021-02-22 00:43:34,483 INFO L226 Difference]: Without dead ends: 281 [2021-02-22 00:43:34,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-22 00:43:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-22 00:43:34,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 226. [2021-02-22 00:43:34,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-02-22 00:43:34,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 240 transitions. [2021-02-22 00:43:34,600 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 240 transitions. Word has length 161 [2021-02-22 00:43:34,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:34,601 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 240 transitions. [2021-02-22 00:43:34,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:43:34,601 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 240 transitions. [2021-02-22 00:43:34,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-22 00:43:34,603 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:34,604 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] [2021-02-22 00:43:34,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 00:43:34,604 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:34,605 INFO L82 PathProgramCache]: Analyzing trace with hash 349736484, now seen corresponding path program 1 times [2021-02-22 00:43:34,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:34,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634527507] [2021-02-22 00:43:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:34,609 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:34,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:34,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:34,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:34,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:34,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:34,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:34,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:34,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:34,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:34,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:34,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:34,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,066 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:35,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:43:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:43:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:35,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:43:35,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:43:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 00:43:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-22 00:43:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:35,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:35,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:35,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634527507] [2021-02-22 00:43:35,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:35,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 00:43:35,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786341245] [2021-02-22 00:43:35,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 00:43:35,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:35,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 00:43:35,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 00:43:35,328 INFO L87 Difference]: Start difference. First operand 226 states and 240 transitions. Second operand 7 states. [2021-02-22 00:43:35,995 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:37,917 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:38,729 INFO L93 Difference]: Finished difference Result 563 states and 666 transitions. [2021-02-22 00:43:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 00:43:38,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2021-02-22 00:43:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:38,734 INFO L225 Difference]: With dead ends: 563 [2021-02-22 00:43:38,735 INFO L226 Difference]: Without dead ends: 452 [2021-02-22 00:43:38,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-02-22 00:43:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-02-22 00:43:38,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 325. [2021-02-22 00:43:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-22 00:43:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 349 transitions. [2021-02-22 00:43:38,862 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 349 transitions. Word has length 169 [2021-02-22 00:43:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:38,863 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 349 transitions. [2021-02-22 00:43:38,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 00:43:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 349 transitions. [2021-02-22 00:43:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-02-22 00:43:38,866 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:38,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:43:38,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 00:43:38,867 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:38,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1813492629, now seen corresponding path program 1 times [2021-02-22 00:43:38,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:38,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617678083] [2021-02-22 00:43:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:38,871 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:38,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:38,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:38,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:38,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:38,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:38,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:38,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:38,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:38,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:38,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:38,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:38,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:38,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:38,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,352 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:39,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:43:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:43:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:43:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:43:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:43:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-22 00:43:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:39,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:39,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-22 00:43:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:39,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:39,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:39,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617678083] [2021-02-22 00:43:39,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:39,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:43:39,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111798641] [2021-02-22 00:43:39,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:43:39,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:39,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:43:39,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:43:39,590 INFO L87 Difference]: Start difference. First operand 325 states and 349 transitions. Second operand 10 states. [2021-02-22 00:43:40,237 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:41,881 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:42,293 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:43:42,700 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:43,086 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:43:43,453 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:43,835 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:44,218 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:44,748 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:46,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:46,185 INFO L93 Difference]: Finished difference Result 934 states and 1136 transitions. [2021-02-22 00:43:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 00:43:46,186 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2021-02-22 00:43:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:46,194 INFO L225 Difference]: With dead ends: 934 [2021-02-22 00:43:46,194 INFO L226 Difference]: Without dead ends: 724 [2021-02-22 00:43:46,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-22 00:43:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-02-22 00:43:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 498. [2021-02-22 00:43:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2021-02-22 00:43:46,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 541 transitions. [2021-02-22 00:43:46,421 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 541 transitions. Word has length 193 [2021-02-22 00:43:46,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:46,421 INFO L480 AbstractCegarLoop]: Abstraction has 498 states and 541 transitions. [2021-02-22 00:43:46,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:43:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 541 transitions. [2021-02-22 00:43:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-22 00:43:46,425 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:46,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:43:46,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 00:43:46,426 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:46,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1745554174, now seen corresponding path program 1 times [2021-02-22 00:43:46,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:46,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600638190] [2021-02-22 00:43:46,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:46,430 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,844 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:43:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:43:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:43:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:43:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:43:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:43:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-22 00:43:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-22 00:43:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:47,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:47,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:47,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600638190] [2021-02-22 00:43:47,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:47,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 00:43:47,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284128859] [2021-02-22 00:43:47,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 00:43:47,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:47,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 00:43:47,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-22 00:43:47,084 INFO L87 Difference]: Start difference. First operand 498 states and 541 transitions. Second operand 11 states. [2021-02-22 00:43:47,788 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:49,555 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:49,898 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:50,306 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:43:50,695 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:51,106 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:51,518 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:43:51,898 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:52,327 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:54,012 INFO L93 Difference]: Finished difference Result 859 states and 1068 transitions. [2021-02-22 00:43:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 00:43:54,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 198 [2021-02-22 00:43:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:54,020 INFO L225 Difference]: With dead ends: 859 [2021-02-22 00:43:54,020 INFO L226 Difference]: Without dead ends: 856 [2021-02-22 00:43:54,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-02-22 00:43:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-02-22 00:43:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 498. [2021-02-22 00:43:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2021-02-22 00:43:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 540 transitions. [2021-02-22 00:43:54,248 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 540 transitions. Word has length 198 [2021-02-22 00:43:54,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:54,248 INFO L480 AbstractCegarLoop]: Abstraction has 498 states and 540 transitions. [2021-02-22 00:43:54,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 00:43:54,249 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 540 transitions. [2021-02-22 00:43:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-22 00:43:54,252 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:54,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:43:54,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 00:43:54,253 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:54,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1745880707, now seen corresponding path program 1 times [2021-02-22 00:43:54,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:54,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218654444] [2021-02-22 00:43:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:54,257 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,611 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:54,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:43:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:43:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:43:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:54,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:54,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:43:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:54,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:54,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:43:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:43:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-22 00:43:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-22 00:43:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:54,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:54,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:54,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218654444] [2021-02-22 00:43:54,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:54,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 00:43:54,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220852417] [2021-02-22 00:43:54,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 00:43:54,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 00:43:54,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-22 00:43:54,833 INFO L87 Difference]: Start difference. First operand 498 states and 540 transitions. Second operand 11 states. [2021-02-22 00:43:56,317 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:56,740 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:43:57,172 WARN L202 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-22 00:43:57,590 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:57,983 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:43:58,365 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:59,821 INFO L93 Difference]: Finished difference Result 1249 states and 1522 transitions. [2021-02-22 00:43:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 00:43:59,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2021-02-22 00:43:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:59,828 INFO L225 Difference]: With dead ends: 1249 [2021-02-22 00:43:59,828 INFO L226 Difference]: Without dead ends: 866 [2021-02-22 00:43:59,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-22 00:43:59,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-02-22 00:44:00,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 514. [2021-02-22 00:44:00,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2021-02-22 00:44:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 556 transitions. [2021-02-22 00:44:00,059 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 556 transitions. Word has length 199 [2021-02-22 00:44:00,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:00,060 INFO L480 AbstractCegarLoop]: Abstraction has 514 states and 556 transitions. [2021-02-22 00:44:00,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 00:44:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 556 transitions. [2021-02-22 00:44:00,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-22 00:44:00,063 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:00,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:00,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 00:44:00,063 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:00,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:00,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1126845725, now seen corresponding path program 1 times [2021-02-22 00:44:00,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:00,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454468969] [2021-02-22 00:44:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:00,067 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:00,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:00,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,418 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:00,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:00,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:00,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:00,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:00,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:00,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-22 00:44:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-22 00:44:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:00,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:00,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:00,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454468969] [2021-02-22 00:44:00,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:00,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 00:44:00,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569036887] [2021-02-22 00:44:00,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 00:44:00,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:00,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 00:44:00,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-22 00:44:00,671 INFO L87 Difference]: Start difference. First operand 514 states and 556 transitions. Second operand 14 states. [2021-02-22 00:44:01,376 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:01,755 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:44:02,134 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:02,534 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:02,908 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:03,991 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:04,378 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:04,764 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:05,156 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:05,512 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:07,453 INFO L93 Difference]: Finished difference Result 1287 states and 1583 transitions. [2021-02-22 00:44:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 00:44:07,453 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2021-02-22 00:44:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:07,460 INFO L225 Difference]: With dead ends: 1287 [2021-02-22 00:44:07,461 INFO L226 Difference]: Without dead ends: 888 [2021-02-22 00:44:07,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-22 00:44:07,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-02-22 00:44:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 526. [2021-02-22 00:44:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2021-02-22 00:44:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 568 transitions. [2021-02-22 00:44:07,737 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 568 transitions. Word has length 199 [2021-02-22 00:44:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:07,737 INFO L480 AbstractCegarLoop]: Abstraction has 526 states and 568 transitions. [2021-02-22 00:44:07,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 00:44:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 568 transitions. [2021-02-22 00:44:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-22 00:44:07,741 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:07,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:07,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 00:44:07,742 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:07,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1335194496, now seen corresponding path program 1 times [2021-02-22 00:44:07,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:07,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798123279] [2021-02-22 00:44:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:07,746 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:07,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:07,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:07,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:07,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:07,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:07,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:07,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:07,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:07,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:07,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:44:07,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:07,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,135 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:08,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:44:08,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:08,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:44:08,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:44:08,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-22 00:44:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-22 00:44:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:08,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:08,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:08,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798123279] [2021-02-22 00:44:08,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:08,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 00:44:08,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387226908] [2021-02-22 00:44:08,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 00:44:08,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:08,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 00:44:08,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-22 00:44:08,339 INFO L87 Difference]: Start difference. First operand 526 states and 568 transitions. Second operand 8 states. [2021-02-22 00:44:09,014 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:09,753 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:13,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:13,734 INFO L93 Difference]: Finished difference Result 1936 states and 2440 transitions. [2021-02-22 00:44:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-22 00:44:13,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2021-02-22 00:44:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:13,746 INFO L225 Difference]: With dead ends: 1936 [2021-02-22 00:44:13,746 INFO L226 Difference]: Without dead ends: 1525 [2021-02-22 00:44:13,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2021-02-22 00:44:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2021-02-22 00:44:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 948. [2021-02-22 00:44:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2021-02-22 00:44:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1056 transitions. [2021-02-22 00:44:14,315 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1056 transitions. Word has length 199 [2021-02-22 00:44:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:14,316 INFO L480 AbstractCegarLoop]: Abstraction has 948 states and 1056 transitions. [2021-02-22 00:44:14,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 00:44:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1056 transitions. [2021-02-22 00:44:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-22 00:44:14,319 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:14,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:14,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 00:44:14,319 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1808277229, now seen corresponding path program 1 times [2021-02-22 00:44:14,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:14,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869474807] [2021-02-22 00:44:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:14,323 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:44:14,405 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:44:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:44:14,479 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:44:14,743 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 00:44:14,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 00:44:14,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 00:44:14,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 12:44:14 BoogieIcfgContainer [2021-02-22 00:44:14,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 00:44:14,786 INFO L168 Benchmark]: Toolchain (without parser) took 52782.19 ms. Allocated memory was 153.1 MB in the beginning and 521.1 MB in the end (delta: 368.1 MB). Free memory was 127.3 MB in the beginning and 215.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 280.5 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:14,787 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 00:44:14,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.32 ms. Allocated memory is still 153.1 MB. Free memory was 126.0 MB in the beginning and 105.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:14,787 INFO L168 Benchmark]: Boogie Preprocessor took 82.79 ms. Allocated memory is still 153.1 MB. Free memory was 105.4 MB in the beginning and 101.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:14,787 INFO L168 Benchmark]: RCFGBuilder took 1269.87 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 101.5 MB in the beginning and 159.5 MB in the end (delta: -58.0 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:14,787 INFO L168 Benchmark]: TraceAbstraction took 50859.87 ms. Allocated memory was 186.6 MB in the beginning and 521.1 MB in the end (delta: 334.5 MB). Free memory was 159.0 MB in the beginning and 215.8 MB in the end (delta: -56.8 MB). Peak memory consumption was 277.7 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:14,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 552.32 ms. Allocated memory is still 153.1 MB. Free memory was 126.0 MB in the beginning and 105.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.79 ms. Allocated memory is still 153.1 MB. Free memory was 105.4 MB in the beginning and 101.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1269.87 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 101.5 MB in the beginning and 159.5 MB in the end (delta: -58.0 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50859.87 ms. Allocated memory was 186.6 MB in the beginning and 521.1 MB in the end (delta: 334.5 MB). Free memory was 159.0 MB in the beginning and 215.8 MB in the end (delta: -56.8 MB). Peak memory consumption was 277.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 [L631] COND TRUE 1 [L633] COND TRUE splverifierCounter < 4 [L639] tmp = __VERIFIER_nondet_int() [L641] COND TRUE \read(tmp) [L643] CALL waterRise() [L544] COND TRUE waterLevel < 2 [L545] waterLevel = waterLevel + 1 [L643] RET waterRise() [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND TRUE \read(tmp___0) [L653] CALL changeMethaneLevel() [L556] COND FALSE !(\read(methaneLevelCritical)) [L559] methaneLevelCritical = 1 [L653] RET changeMethaneLevel() [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L663] CALL startSystem() [L847] systemActive = 1 [L663] RET startSystem() [L676] CALL timeShift() [L699] COND FALSE !(\read(pumpRunning)) [L706] COND TRUE \read(systemActive) [L708] CALL processEnvironment() [L728] int tmp ; [L731] COND TRUE ! pumpRunning [L733] CALL, EXPR isHighWaterLevel() [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L831] CALL, EXPR isHighWaterSensorDry() [L606] int retValue_acc ; [L609] COND FALSE !(waterLevel < 2) [L613] retValue_acc = 0 [L614] return (retValue_acc); [L831] RET, EXPR isHighWaterSensorDry() [L831] tmp = isHighWaterSensorDry() [L833] COND FALSE !(\read(tmp)) [L836] tmp___0 = 1 [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); [L733] RET, EXPR isHighWaterLevel() [L733] tmp = isHighWaterLevel() [L735] COND TRUE \read(tmp) [L737] CALL activatePump() [L756] pumpRunning = 1 [L737] RET activatePump() [L708] RET processEnvironment() [L714] CALL __utac_acc__Specification1_spec__1() [L853] int tmp ; [L854] int tmp___0 ; [L858] CALL, EXPR isMethaneLevelCritical() [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND TRUE \read(tmp) [L862] CALL, EXPR isPumpRunning() [L780] int retValue_acc ; [L783] retValue_acc = pumpRunning [L784] return (retValue_acc); [L862] RET, EXPR isPumpRunning() [L862] tmp___0 = isPumpRunning() [L864] COND TRUE \read(tmp___0) [L866] CALL __automaton_fail() [L516] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 619 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 41.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2028 SDtfs, 5150 SDslu, 4407 SDs, 0 SdLazy, 7927 SolverSat, 1460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=948occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 2130 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...