/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 00:44:09,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 00:44:09,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 00:44:09,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 00:44:09,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 00:44:09,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 00:44:09,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 00:44:09,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 00:44:09,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 00:44:09,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 00:44:09,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 00:44:09,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 00:44:09,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 00:44:09,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 00:44:09,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 00:44:09,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 00:44:09,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 00:44:09,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 00:44:09,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 00:44:09,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 00:44:09,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 00:44:09,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 00:44:09,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 00:44:09,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 00:44:09,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 00:44:09,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 00:44:09,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 00:44:09,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 00:44:09,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 00:44:09,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-02-22 00:44:09,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 00:44:09,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 00:44:09,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 00:44:09,561 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 00:44:09,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 00:44:09,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 00:44:09,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 00:44:09,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 00:44:09,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 00:44:09,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 00:44:09,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 00:44:09,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 00:44:09,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 00:44:09,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 00:44:09,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 00:44:09,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 00:44:09,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 00:44:09,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 00:44:09,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 00:44:09,594 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 00:44:09,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 00:44:09,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 00:44:09,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:44:09,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 00:44:09,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 00:44:09,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 00:44:09,596 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 00:44:09,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 00:44:09,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 00:44:10,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 00:44:10,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 00:44:10,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 00:44:10,018 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 00:44:10,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2021-02-22 00:44:10,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02e302a3/7dae924ec5884ce690e2bc30e7c95a94/FLAG8dc17d089 [2021-02-22 00:44:10,716 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 00:44:10,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2021-02-22 00:44:10,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02e302a3/7dae924ec5884ce690e2bc30e7c95a94/FLAG8dc17d089 [2021-02-22 00:44:11,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02e302a3/7dae924ec5884ce690e2bc30e7c95a94 [2021-02-22 00:44:11,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 00:44:11,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 00:44:11,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 00:44:11,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 00:44:11,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 00:44:11,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518e78ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11, skipping insertion in model container [2021-02-22 00:44:11,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 00:44:11,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 00:44:11,259 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_product44.cil.c[1281,1294] [2021-02-22 00:44:11,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:44:11,446 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 00:44:11,462 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_product44.cil.c[1281,1294] [2021-02-22 00:44:11,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:44:11,588 INFO L208 MainTranslator]: Completed translation [2021-02-22 00:44:11,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11 WrapperNode [2021-02-22 00:44:11,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 00:44:11,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 00:44:11,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 00:44:11,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 00:44:11,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (1/1) ... [2021-02-22 00:44:11,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 00:44:11,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 00:44:11,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 00:44:11,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 00:44:11,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (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 00:44:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 00:44:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 00:44:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 00:44:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 00:44:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 00:44:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 00:44:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 00:44:11,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 00:44:11,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 00:44:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 00:44:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 00:44:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 00:44:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 00:44:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 00:44:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 00:44:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-22 00:44:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 00:44:11,906 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 00:44:11,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 00:44:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 00:44:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 00:44:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 00:44:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 00:44:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 00:44:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 00:44:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 00:44:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 00:44:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 00:44:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 00:44:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 00:44:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 00:44:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:44:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 00:44:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 00:44:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 00:44:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 00:44:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 00:44:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 00:44:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 00:44:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 00:44:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 00:44:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 00:44:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 00:44:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 00:44:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 00:44:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 00:44:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 00:44:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 00:44:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 00:44:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 00:44:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 00:44:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 00:44:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 00:44:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 00:44:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 00:44:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 00:44:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 00:44:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 00:44:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 00:44:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 00:44:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 00:44:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 00:44:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 00:44:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 00:44:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 00:44:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 00:44:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 00:44:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 00:44:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 00:44:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 00:44:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 00:44:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 00:44:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 00:44:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 00:44:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 00:44:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 00:44:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 00:44:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 00:44:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:44:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 00:44:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 00:44:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 00:44:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-22 00:44:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 00:44:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 00:44:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 00:44:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 00:44:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 00:44:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 00:44:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 00:44:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 00:44:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 00:44:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 00:44:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 00:44:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 00:44:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 00:44:13,616 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 00:44:13,616 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 00:44:13,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:44:13 BoogieIcfgContainer [2021-02-22 00:44:13,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 00:44:13,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 00:44:13,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 00:44:13,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 00:44:13,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 12:44:11" (1/3) ... [2021-02-22 00:44:13,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404be3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:44:13, skipping insertion in model container [2021-02-22 00:44:13,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:44:11" (2/3) ... [2021-02-22 00:44:13,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404be3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:44:13, skipping insertion in model container [2021-02-22 00:44:13,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:44:13" (3/3) ... [2021-02-22 00:44:13,629 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2021-02-22 00:44:13,635 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 00:44:13,641 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 00:44:13,658 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 00:44:13,685 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 00:44:13,685 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 00:44:13,685 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 00:44:13,685 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 00:44:13,685 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 00:44:13,685 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 00:44:13,686 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 00:44:13,686 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 00:44:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2021-02-22 00:44:13,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-22 00:44:13,730 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:13,731 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 00:44:13,732 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:13,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:13,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1155151272, now seen corresponding path program 1 times [2021-02-22 00:44:13,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:13,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188478322] [2021-02-22 00:44:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:13,840 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:14,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:14,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:14,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:14,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:14,948 WARN L202 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:15,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:15,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:15,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:15,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:15,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:15,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:15,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:15,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:15,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:15,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:15,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:15,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:15,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:15,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-22 00:44:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:15,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:15,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:15,162 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 00:44:15,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188478322] [2021-02-22 00:44:15,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:15,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 00:44:15,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151965017] [2021-02-22 00:44:15,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 00:44:15,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:15,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 00:44:15,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:44:15,195 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 3 states. [2021-02-22 00:44:17,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:17,621 INFO L93 Difference]: Finished difference Result 490 states and 580 transitions. [2021-02-22 00:44:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 00:44:17,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-22 00:44:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:17,644 INFO L225 Difference]: With dead ends: 490 [2021-02-22 00:44:17,645 INFO L226 Difference]: Without dead ends: 306 [2021-02-22 00:44:17,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:44:17,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-22 00:44:17,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 262. [2021-02-22 00:44:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-02-22 00:44:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 283 transitions. [2021-02-22 00:44:17,881 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 283 transitions. Word has length 147 [2021-02-22 00:44:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:17,882 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 283 transitions. [2021-02-22 00:44:17,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 00:44:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 283 transitions. [2021-02-22 00:44:17,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-22 00:44:17,887 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:17,888 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 00:44:17,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 00:44:17,888 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:17,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:17,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1619109440, now seen corresponding path program 1 times [2021-02-22 00:44:17,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:17,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792615039] [2021-02-22 00:44:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:17,894 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:18,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,616 WARN L202 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 00:44:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:44:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,739 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 00:44:18,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792615039] [2021-02-22 00:44:18,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:18,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 00:44:18,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401853147] [2021-02-22 00:44:18,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 00:44:18,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:18,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 00:44:18,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 00:44:18,743 INFO L87 Difference]: Start difference. First operand 262 states and 283 transitions. Second operand 4 states. [2021-02-22 00:44:19,874 WARN L202 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:21,494 INFO L93 Difference]: Finished difference Result 393 states and 440 transitions. [2021-02-22 00:44:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 00:44:21,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-22 00:44:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:21,501 INFO L225 Difference]: With dead ends: 393 [2021-02-22 00:44:21,501 INFO L226 Difference]: Without dead ends: 289 [2021-02-22 00:44:21,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 00:44:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-22 00:44:21,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 252. [2021-02-22 00:44:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2021-02-22 00:44:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 270 transitions. [2021-02-22 00:44:21,597 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 270 transitions. Word has length 148 [2021-02-22 00:44:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:21,597 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 270 transitions. [2021-02-22 00:44:21,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 00:44:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 270 transitions. [2021-02-22 00:44:21,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-22 00:44:21,601 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:21,601 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 00:44:21,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 00:44:21,601 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:21,602 INFO L82 PathProgramCache]: Analyzing trace with hash -621301170, now seen corresponding path program 1 times [2021-02-22 00:44:21,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:21,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300856474] [2021-02-22 00:44:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:21,606 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:21,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:21,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:21,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:21,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:21,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:21,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:21,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:21,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:21,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:21,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:44:21,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:21,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:22,344 WARN L202 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:22,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:22,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:22,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:22,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:22,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:22,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:22,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:22,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:22,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:44:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:22,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-22 00:44:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:22,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 00:44:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:22,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:22,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:22,533 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 00:44:22,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300856474] [2021-02-22 00:44:22,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:22,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:44:22,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492382175] [2021-02-22 00:44:22,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:44:22,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:22,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:44:22,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:44:22,536 INFO L87 Difference]: Start difference. First operand 252 states and 270 transitions. Second operand 10 states. [2021-02-22 00:44:23,605 WARN L202 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:24,409 WARN L202 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:25,126 WARN L202 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:44:25,817 WARN L202 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:26,520 WARN L202 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:27,164 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:28,845 WARN L202 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:32,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:32,739 INFO L93 Difference]: Finished difference Result 681 states and 788 transitions. [2021-02-22 00:44:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 00:44:32,740 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-22 00:44:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:32,746 INFO L225 Difference]: With dead ends: 681 [2021-02-22 00:44:32,746 INFO L226 Difference]: Without dead ends: 544 [2021-02-22 00:44:32,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-22 00:44:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-02-22 00:44:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 437. [2021-02-22 00:44:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2021-02-22 00:44:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 483 transitions. [2021-02-22 00:44:32,916 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 483 transitions. Word has length 161 [2021-02-22 00:44:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:32,917 INFO L480 AbstractCegarLoop]: Abstraction has 437 states and 483 transitions. [2021-02-22 00:44:32,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:44:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 483 transitions. [2021-02-22 00:44:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-22 00:44:32,921 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:32,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:32,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 00:44:32,922 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:32,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:32,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1526674415, now seen corresponding path program 1 times [2021-02-22 00:44:32,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:32,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759402409] [2021-02-22 00:44:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:32,926 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,667 WARN L202 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:33,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 00:44:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-22 00:44:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:33,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-22 00:44:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:33,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:33,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:33,844 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 00:44:33,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759402409] [2021-02-22 00:44:33,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:33,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 00:44:33,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447556434] [2021-02-22 00:44:33,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 00:44:33,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:33,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 00:44:33,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 00:44:33,846 INFO L87 Difference]: Start difference. First operand 437 states and 483 transitions. Second operand 9 states. [2021-02-22 00:44:34,829 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:37,280 WARN L202 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:37,931 WARN L202 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:38,734 WARN L202 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:39,445 WARN L202 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:40,125 WARN L202 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:40,818 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:41,494 WARN L202 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:42,409 WARN L202 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:44,664 INFO L93 Difference]: Finished difference Result 1199 states and 1423 transitions. [2021-02-22 00:44:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 00:44:44,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-22 00:44:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:44,672 INFO L225 Difference]: With dead ends: 1199 [2021-02-22 00:44:44,672 INFO L226 Difference]: Without dead ends: 877 [2021-02-22 00:44:44,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-22 00:44:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-02-22 00:44:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 720. [2021-02-22 00:44:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2021-02-22 00:44:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 807 transitions. [2021-02-22 00:44:44,974 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 807 transitions. Word has length 166 [2021-02-22 00:44:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:44,975 INFO L480 AbstractCegarLoop]: Abstraction has 720 states and 807 transitions. [2021-02-22 00:44:44,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 00:44:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 807 transitions. [2021-02-22 00:44:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-22 00:44:44,979 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:44,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:44,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 00:44:44,979 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:44,980 INFO L82 PathProgramCache]: Analyzing trace with hash 949919622, now seen corresponding path program 1 times [2021-02-22 00:44:44,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:44,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960535500] [2021-02-22 00:44:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:44,984 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,689 WARN L202 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:45,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-22 00:44:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 00:44:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-22 00:44:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:45,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:45,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:45,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:45,888 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 00:44:45,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960535500] [2021-02-22 00:44:45,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:45,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:44:45,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099940869] [2021-02-22 00:44:45,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:44:45,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:45,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:44:45,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:44:45,890 INFO L87 Difference]: Start difference. First operand 720 states and 807 transitions. Second operand 10 states. [2021-02-22 00:44:46,926 WARN L202 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:49,392 WARN L202 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:50,122 WARN L202 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:50,883 WARN L202 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:51,622 WARN L202 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:52,291 WARN L202 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:53,817 WARN L202 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:54,495 WARN L202 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:55,340 WARN L202 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:57,189 INFO L93 Difference]: Finished difference Result 1868 states and 2258 transitions. [2021-02-22 00:44:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 00:44:57,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-22 00:44:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:57,201 INFO L225 Difference]: With dead ends: 1868 [2021-02-22 00:44:57,201 INFO L226 Difference]: Without dead ends: 1263 [2021-02-22 00:44:57,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-22 00:44:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2021-02-22 00:44:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1018. [2021-02-22 00:44:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2021-02-22 00:44:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1162 transitions. [2021-02-22 00:44:57,646 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1162 transitions. Word has length 171 [2021-02-22 00:44:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:57,647 INFO L480 AbstractCegarLoop]: Abstraction has 1018 states and 1162 transitions. [2021-02-22 00:44:57,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:44:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1162 transitions. [2021-02-22 00:44:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-02-22 00:44:57,652 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:57,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:57,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 00:44:57,653 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:57,654 INFO L82 PathProgramCache]: Analyzing trace with hash 2052106504, now seen corresponding path program 1 times [2021-02-22 00:44:57,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:57,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319110284] [2021-02-22 00:44:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:57,658 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:57,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:57,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:57,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,258 WARN L202 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:58,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:58,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:58,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:58,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:58,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 00:44:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 00:44:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 00:44:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-02-22 00:44:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-02-22 00:44:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:58,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:58,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:58,567 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 00:44:58,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319110284] [2021-02-22 00:44:58,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:58,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 00:44:58,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435899745] [2021-02-22 00:44:58,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 00:44:58,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:58,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 00:44:58,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-22 00:44:58,570 INFO L87 Difference]: Start difference. First operand 1018 states and 1162 transitions. Second operand 11 states. [2021-02-22 00:45:00,959 WARN L202 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:01,597 WARN L202 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:45:02,395 WARN L202 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-22 00:45:03,207 WARN L202 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:03,971 WARN L202 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:04,677 WARN L202 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:07,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:07,112 INFO L93 Difference]: Finished difference Result 2533 states and 3213 transitions. [2021-02-22 00:45:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 00:45:07,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 221 [2021-02-22 00:45:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:07,126 INFO L225 Difference]: With dead ends: 2533 [2021-02-22 00:45:07,126 INFO L226 Difference]: Without dead ends: 1630 [2021-02-22 00:45:07,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-22 00:45:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-02-22 00:45:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1056. [2021-02-22 00:45:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2021-02-22 00:45:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1200 transitions. [2021-02-22 00:45:07,565 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1200 transitions. Word has length 221 [2021-02-22 00:45:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:07,566 INFO L480 AbstractCegarLoop]: Abstraction has 1056 states and 1200 transitions. [2021-02-22 00:45:07,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 00:45:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1200 transitions. [2021-02-22 00:45:07,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-02-22 00:45:07,571 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:07,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:45:07,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 00:45:07,572 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:07,573 INFO L82 PathProgramCache]: Analyzing trace with hash 297436328, now seen corresponding path program 1 times [2021-02-22 00:45:07,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:07,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058578026] [2021-02-22 00:45:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:07,576 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:07,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:07,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:07,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:07,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:07,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:07,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:07,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:07,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:07,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:07,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,240 WARN L202 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:08,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:08,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:45:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:45:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:45:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:08,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:08,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:08,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:08,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 00:45:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 00:45:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 00:45:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-02-22 00:45:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-02-22 00:45:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:08,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:08,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:08,602 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 00:45:08,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058578026] [2021-02-22 00:45:08,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:08,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 00:45:08,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509733065] [2021-02-22 00:45:08,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 00:45:08,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:08,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 00:45:08,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-22 00:45:08,605 INFO L87 Difference]: Start difference. First operand 1056 states and 1200 transitions. Second operand 14 states. [2021-02-22 00:45:09,799 WARN L202 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:45:10,499 WARN L202 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:45:11,182 WARN L202 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:11,873 WARN L202 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:12,529 WARN L202 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:14,496 WARN L202 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:15,222 WARN L202 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:16,019 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:16,854 WARN L202 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:17,601 WARN L202 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:21,097 INFO L93 Difference]: Finished difference Result 2607 states and 3283 transitions. [2021-02-22 00:45:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 00:45:21,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 221 [2021-02-22 00:45:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:21,109 INFO L225 Difference]: With dead ends: 2607 [2021-02-22 00:45:21,109 INFO L226 Difference]: Without dead ends: 1666 [2021-02-22 00:45:21,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-22 00:45:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-02-22 00:45:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1080. [2021-02-22 00:45:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2021-02-22 00:45:21,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1224 transitions. [2021-02-22 00:45:21,768 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1224 transitions. Word has length 221 [2021-02-22 00:45:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:21,769 INFO L480 AbstractCegarLoop]: Abstraction has 1080 states and 1224 transitions. [2021-02-22 00:45:21,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 00:45:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1224 transitions. [2021-02-22 00:45:21,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-02-22 00:45:21,773 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:21,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:45:21,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 00:45:21,774 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash 970157771, now seen corresponding path program 1 times [2021-02-22 00:45:21,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:21,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868882950] [2021-02-22 00:45:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:21,779 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:21,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:21,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:21,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:21,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:21,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:21,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:21,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:21,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:21,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:21,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:45:21,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:21,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,478 WARN L202 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:45:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:45:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:45:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:45:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:22,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:45:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:45:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 00:45:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 00:45:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 00:45:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-02-22 00:45:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-02-22 00:45:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:22,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:22,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:22,745 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 00:45:22,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868882950] [2021-02-22 00:45:22,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:22,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 00:45:22,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023663283] [2021-02-22 00:45:22,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 00:45:22,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:22,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 00:45:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-22 00:45:22,747 INFO L87 Difference]: Start difference. First operand 1080 states and 1224 transitions. Second operand 8 states. [2021-02-22 00:45:23,845 WARN L202 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:25,033 WARN L202 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:32,807 INFO L93 Difference]: Finished difference Result 4084 states and 5189 transitions. [2021-02-22 00:45:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-22 00:45:32,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2021-02-22 00:45:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:32,828 INFO L225 Difference]: With dead ends: 4084 [2021-02-22 00:45:32,829 INFO L226 Difference]: Without dead ends: 3119 [2021-02-22 00:45:32,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-02-22 00:45:32,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2021-02-22 00:45:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 2220. [2021-02-22 00:45:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2220 states. [2021-02-22 00:45:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2552 transitions. [2021-02-22 00:45:33,848 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2552 transitions. Word has length 221 [2021-02-22 00:45:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:33,849 INFO L480 AbstractCegarLoop]: Abstraction has 2220 states and 2552 transitions. [2021-02-22 00:45:33,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 00:45:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2552 transitions. [2021-02-22 00:45:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-02-22 00:45:33,853 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:33,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:45:33,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 00:45:33,854 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:33,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:33,854 INFO L82 PathProgramCache]: Analyzing trace with hash -331073473, now seen corresponding path program 1 times [2021-02-22 00:45:33,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:33,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811830571] [2021-02-22 00:45:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:33,858 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:33,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:33,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:33,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:33,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:45:33,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:33,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,501 WARN L202 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:34,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:34,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-22 00:45:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-22 00:45:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-22 00:45:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 00:45:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,837 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-22 00:45:34,840 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-22 00:45:34,893 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-22 00:45:34,894 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-22 00:45:34,940 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-22 00:45:34,941 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-22 00:45:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 00:45:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:34,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:34,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:34,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:35,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:35,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:35,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:35,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:35,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 00:45:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:35,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:35,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:35,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:35,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:35,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:35,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:45:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 00:45:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:35,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:35,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:35,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-22 00:45:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:35,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:35,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:35,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-02-22 00:45:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:35,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:35,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:35,270 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 00:45:35,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811830571] [2021-02-22 00:45:35,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:35,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-22 00:45:35,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709936209] [2021-02-22 00:45:35,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-22 00:45:35,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:35,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-22 00:45:35,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-02-22 00:45:35,273 INFO L87 Difference]: Start difference. First operand 2220 states and 2552 transitions. Second operand 21 states. [2021-02-22 00:45:36,500 WARN L202 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:37,435 WARN L202 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:45:38,217 WARN L202 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-22 00:45:38,962 WARN L202 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:39,689 WARN L202 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:45:40,399 WARN L202 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:42,154 WARN L202 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:44,025 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:44,942 WARN L202 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:45:45,959 WARN L202 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:46,770 WARN L202 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:45:50,196 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:51,111 WARN L202 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:45:51,821 WARN L202 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:52,580 WARN L202 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:45:53,389 WARN L202 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:54,359 WARN L202 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:45:55,124 WARN L202 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:45:55,893 WARN L202 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:45:57,327 WARN L202 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2021-02-22 00:45:58,942 WARN L202 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 218 DAG size of output: 208 [2021-02-22 00:46:00,294 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2021-02-22 00:46:06,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:46:06,655 INFO L93 Difference]: Finished difference Result 5130 states and 6248 transitions. [2021-02-22 00:46:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-22 00:46:06,657 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 226 [2021-02-22 00:46:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:46:06,676 INFO L225 Difference]: With dead ends: 5130 [2021-02-22 00:46:06,676 INFO L226 Difference]: Without dead ends: 3025 [2021-02-22 00:46:06,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=830, Invalid=3592, Unknown=0, NotChecked=0, Total=4422 [2021-02-22 00:46:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2021-02-22 00:46:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2140. [2021-02-22 00:46:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2140 states. [2021-02-22 00:46:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2426 transitions. [2021-02-22 00:46:07,614 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2426 transitions. Word has length 226 [2021-02-22 00:46:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:46:07,615 INFO L480 AbstractCegarLoop]: Abstraction has 2140 states and 2426 transitions. [2021-02-22 00:46:07,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-22 00:46:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2426 transitions. [2021-02-22 00:46:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-02-22 00:46:07,621 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:46:07,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:07,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 00:46:07,622 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:46:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:46:07,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1494812928, now seen corresponding path program 1 times [2021-02-22 00:46:07,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:46:07,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125866442] [2021-02-22 00:46:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:46:07,737 WARN L141 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size [2021-02-22 00:46:07,738 WARN L147 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size 1 [2021-02-22 00:46:07,752 WARN L141 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size [2021-02-22 00:46:07,753 WARN L147 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size 1 [2021-02-22 00:46:07,761 WARN L141 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size [2021-02-22 00:46:07,787 WARN L147 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size 8 [2021-02-22 00:46:07,794 WARN L141 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size [2021-02-22 00:46:07,805 WARN L147 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size 42 [2021-02-22 00:46:07,820 WARN L141 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size [2021-02-22 00:46:07,832 WARN L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-02-22 00:46:07,837 WARN L141 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size [2021-02-22 00:46:07,844 WARN L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-02-22 00:46:07,925 WARN L141 QuantifierPusher]: treesize reduction 41, result has 16.3 percent of original size [2021-02-22 00:46:07,927 WARN L147 QuantifierPusher]: treesize reduction 41, result has 16.3 percent of original size 8 [2021-02-22 00:46:07,936 WARN L141 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size [2021-02-22 00:46:07,941 WARN L147 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size 42 [2021-02-22 00:46:07,944 WARN L141 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size [2021-02-22 00:46:07,944 WARN L147 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size 1 [2021-02-22 00:46:07,946 WARN L141 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size [2021-02-22 00:46:07,947 WARN L147 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size 1 [2021-02-22 00:46:07,949 WARN L141 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size [2021-02-22 00:46:07,951 WARN L147 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size 8 [2021-02-22 00:46:07,954 WARN L141 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size [2021-02-22 00:46:07,956 WARN L147 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size 42 [2021-02-22 00:46:07,960 WARN L141 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size [2021-02-22 00:46:07,968 WARN L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-02-22 00:46:07,973 WARN L141 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size [2021-02-22 00:46:07,980 WARN L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-02-22 00:46:08,059 WARN L141 QuantifierPusher]: treesize reduction 41, result has 16.3 percent of original size [2021-02-22 00:46:08,062 WARN L147 QuantifierPusher]: treesize reduction 41, result has 16.3 percent of original size 8 [2021-02-22 00:46:08,065 WARN L141 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size [2021-02-22 00:46:08,068 WARN L147 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size 42 [2021-02-22 00:46:08,071 WARN L141 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size [2021-02-22 00:46:08,072 WARN L147 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size 1 [2021-02-22 00:46:08,075 WARN L141 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size [2021-02-22 00:46:08,076 WARN L147 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size 1 [2021-02-22 00:46:08,079 WARN L141 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size [2021-02-22 00:46:08,081 WARN L147 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size 8 [2021-02-22 00:46:08,084 WARN L141 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size [2021-02-22 00:46:08,092 WARN L147 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size 42 [2021-02-22 00:46:08,094 WARN L141 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size [2021-02-22 00:46:08,101 WARN L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-02-22 00:46:08,105 WARN L141 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size [2021-02-22 00:46:08,119 WARN L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-02-22 00:46:08,194 WARN L141 QuantifierPusher]: treesize reduction 41, result has 16.3 percent of original size [2021-02-22 00:46:08,198 WARN L147 QuantifierPusher]: treesize reduction 41, result has 16.3 percent of original size 8 [2021-02-22 00:46:08,200 WARN L141 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size [2021-02-22 00:46:08,203 WARN L147 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size 42 [2021-02-22 00:46:08,205 WARN L141 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size [2021-02-22 00:46:08,206 WARN L147 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size 1 [2021-02-22 00:46:08,208 WARN L141 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size [2021-02-22 00:46:08,208 WARN L147 QuantifierPusher]: treesize reduction 80, result has 1.2 percent of original size 1 [2021-02-22 00:46:08,212 WARN L141 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size [2021-02-22 00:46:08,214 WARN L147 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size 8 [2021-02-22 00:46:08,219 WARN L141 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size [2021-02-22 00:46:08,221 WARN L147 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size 42 [2021-02-22 00:46:08,223 WARN L141 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size [2021-02-22 00:46:08,228 WARN L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-02-22 00:46:08,230 WARN L141 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size [2021-02-22 00:46:08,239 WARN L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-02-22 00:46:08,314 WARN L141 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size [2021-02-22 00:46:08,320 INFO L723 QuantifierPusher]: Distributing 10 disjuncts over 3 conjuncts [2021-02-22 00:46:08,327 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:46:08,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 00:46:08,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:46:08,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-02-22 00:46:08,352 WARN L147 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-02-22 00:46:08,362 WARN L141 QuantifierPusher]: treesize reduction 17, result has 87.0 percent of original size [2021-02-22 00:46:08,368 WARN L147 QuantifierPusher]: treesize reduction 17, result has 87.0 percent of original size 114 [2021-02-22 00:46:08,369 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 00:46:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:46:08,481 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:46:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:46:08,621 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:46:08,865 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 00:46:08,865 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 00:46:08,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-22 00:46:08,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 12:46:08 BoogieIcfgContainer [2021-02-22 00:46:08,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 00:46:08,898 INFO L168 Benchmark]: Toolchain (without parser) took 117867.26 ms. Allocated memory was 170.9 MB in the beginning and 966.8 MB in the end (delta: 795.9 MB). Free memory was 146.3 MB in the beginning and 841.5 MB in the end (delta: -695.2 MB). Peak memory consumption was 632.8 MB. Max. memory is 8.0 GB. [2021-02-22 00:46:08,898 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 170.9 MB. Free memory is still 145.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 00:46:08,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.74 ms. Allocated memory is still 170.9 MB. Free memory was 145.1 MB in the beginning and 123.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 00:46:08,898 INFO L168 Benchmark]: Boogie Preprocessor took 163.71 ms. Allocated memory is still 170.9 MB. Free memory was 123.7 MB in the beginning and 119.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 00:46:08,899 INFO L168 Benchmark]: RCFGBuilder took 1863.96 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 119.9 MB in the beginning and 150.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2021-02-22 00:46:08,899 INFO L168 Benchmark]: TraceAbstraction took 115275.60 ms. Allocated memory was 205.5 MB in the beginning and 966.8 MB in the end (delta: 761.3 MB). Free memory was 150.2 MB in the beginning and 841.5 MB in the end (delta: -691.2 MB). Peak memory consumption was 601.1 MB. Max. memory is 8.0 GB. [2021-02-22 00:46:08,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 170.9 MB. Free memory is still 145.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 545.74 ms. Allocated memory is still 170.9 MB. Free memory was 145.1 MB in the beginning and 123.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 163.71 ms. Allocated memory is still 170.9 MB. Free memory was 123.7 MB in the beginning and 119.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1863.96 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 119.9 MB in the beginning and 150.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 115275.60 ms. Allocated memory was 205.5 MB in the beginning and 966.8 MB in the end (delta: 761.3 MB). Free memory was 150.2 MB in the beginning and 841.5 MB in the end (delta: -691.2 MB). Peak memory consumption was 601.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L220] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L500] int pumpRunning = 0; [L501] int systemActive = 1; [L695] int waterLevel = 1; [L696] int methaneLevelCritical = 0; [L853] int cleanupTimeShifts = 4; [L926] int retValue_acc ; [L927] int tmp ; [L931] FCALL select_helpers() [L932] FCALL select_features() [L933] CALL, EXPR valid_product() [L844] int retValue_acc ; [L847] retValue_acc = 1 [L848] return (retValue_acc); [L933] RET, EXPR valid_product() [L933] tmp = valid_product() [L935] COND TRUE \read(tmp) [L937] FCALL setup() [L938] CALL runTest() [L920] CALL test() [L424] int splverifierCounter ; [L425] int tmp ; [L426] int tmp___0 ; [L427] int tmp___1 ; [L428] int tmp___2 ; [L431] splverifierCounter = 0 [L433] COND TRUE 1 [L435] COND TRUE splverifierCounter < 4 [L441] tmp = __VERIFIER_nondet_int() [L443] COND TRUE \read(tmp) [L445] CALL waterRise() [L713] COND TRUE waterLevel < 2 [L714] waterLevel = waterLevel + 1 [L445] RET waterRise() [L451] tmp___0 = __VERIFIER_nondet_int() [L453] COND FALSE !(\read(tmp___0)) [L461] tmp___2 = __VERIFIER_nondet_int() [L463] COND TRUE \read(tmp___2) [L465] CALL startSystem() [L689] systemActive = 1 [L465] RET startSystem() [L480] CALL timeShift() [L508] COND FALSE !(\read(pumpRunning)) [L515] COND TRUE \read(systemActive) [L517] CALL processEnvironment() [L537] int tmp ; [L540] COND TRUE ! pumpRunning [L542] CALL, EXPR isHighWaterLevel() [L652] int retValue_acc ; [L653] int tmp ; [L654] int tmp___0 ; [L658] CALL, EXPR isHighWaterSensorDry() [L775] int retValue_acc ; [L778] COND FALSE !(waterLevel < 2) [L782] retValue_acc = 0 [L783] return (retValue_acc); [L658] RET, EXPR isHighWaterSensorDry() [L658] tmp = isHighWaterSensorDry() [L660] COND FALSE !(\read(tmp)) [L663] tmp___0 = 1 [L665] retValue_acc = tmp___0 [L666] return (retValue_acc); [L542] RET, EXPR isHighWaterLevel() [L542] tmp = isHighWaterLevel() [L544] COND TRUE \read(tmp) [L546] CALL activatePump() [L571] int tmp ; [L575] CALL, EXPR isMethaneAlarm() [L596] int retValue_acc ; [L600] CALL, EXPR isMethaneLevelCritical() [L734] int retValue_acc ; [L737] retValue_acc = methaneLevelCritical [L738] return (retValue_acc); [L600] RET, EXPR isMethaneLevelCritical() [L600] retValue_acc = isMethaneLevelCritical() [L602] return (retValue_acc); [L575] RET, EXPR isMethaneAlarm() [L575] tmp = isMethaneAlarm() [L577] COND FALSE !(\read(tmp)) [L581] CALL activatePump__wrappee__highWaterSensor() [L565] pumpRunning = 1 [L581] RET activatePump__wrappee__highWaterSensor() [L546] RET activatePump() [L517] RET processEnvironment() [L523] CALL __utac_acc__Specification1_spec__1() [L790] int tmp ; [L791] int tmp___0 ; [L795] CALL, EXPR isMethaneLevelCritical() [L734] int retValue_acc ; [L737] retValue_acc = methaneLevelCritical [L738] return (retValue_acc); [L795] RET, EXPR isMethaneLevelCritical() [L795] tmp = isMethaneLevelCritical() [L797] COND FALSE !(\read(tmp)) [L523] RET __utac_acc__Specification1_spec__1() [L480] RET timeShift() [L433] COND TRUE 1 [L435] COND TRUE splverifierCounter < 4 [L441] tmp = __VERIFIER_nondet_int() [L443] COND FALSE !(\read(tmp)) [L451] tmp___0 = __VERIFIER_nondet_int() [L453] COND TRUE \read(tmp___0) [L455] CALL changeMethaneLevel() [L725] COND FALSE !(\read(methaneLevelCritical)) [L728] methaneLevelCritical = 1 [L455] RET changeMethaneLevel() [L461] tmp___2 = __VERIFIER_nondet_int() [L463] COND TRUE \read(tmp___2) [L465] CALL startSystem() [L689] systemActive = 1 [L465] RET startSystem() [L480] CALL timeShift() [L508] COND TRUE \read(pumpRunning) [L510] CALL lowerWaterLevel() [L701] COND TRUE waterLevel > 0 [L702] waterLevel = waterLevel - 1 [L510] RET lowerWaterLevel() [L515] COND TRUE \read(systemActive) [L517] CALL processEnvironment() [L537] int tmp ; [L540] COND FALSE !(! pumpRunning) [L555] FCALL processEnvironment__wrappee__base() [L517] RET processEnvironment() [L523] CALL __utac_acc__Specification1_spec__1() [L790] int tmp ; [L791] int tmp___0 ; [L795] CALL, EXPR isMethaneLevelCritical() [L734] int retValue_acc ; [L737] retValue_acc = methaneLevelCritical [L738] return (retValue_acc); [L795] RET, EXPR isMethaneLevelCritical() [L795] tmp = isMethaneLevelCritical() [L797] COND TRUE \read(tmp) [L799] CALL, EXPR isPumpRunning() [L607] int retValue_acc ; [L610] retValue_acc = pumpRunning [L611] return (retValue_acc); [L799] RET, EXPR isPumpRunning() [L799] tmp___0 = isPumpRunning() [L801] COND TRUE \read(tmp___0) [L803] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 634 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 115.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 100.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2379 SDtfs, 6640 SDslu, 6434 SDs, 0 SdLazy, 13605 SolverSat, 2317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 54.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2220occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 3534 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...