/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:08:33,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:08:33,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:08:33,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:08:33,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:08:33,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:08:33,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:08:33,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:08:33,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:08:33,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:08:33,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:08:33,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:08:33,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:08:33,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:08:33,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:08:33,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:08:33,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:08:33,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:08:33,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:08:33,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:08:33,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:08:33,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:08:33,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:08:33,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:08:33,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 06:08:33,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 06:08:33,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 06:08:33,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 06:08:33,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 06:08:33,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 06:08:33,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 06:08:33,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 06:08:33,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 06:08:33,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 06:08:33,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 06:08:33,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 06:08:33,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 06:08:33,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 06:08:33,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:08:33,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:08:33,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:08:33,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:08:33,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:08:33,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:08:33,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:08:33,325 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:08:33,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:08:33,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:08:33,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:08:33,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:08:33,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:08:33,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:08:33,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:08:33,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:08:33,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:08:33,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:08:33,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:08:33,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:08:33,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:08:33,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:08:33,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:08:33,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:08:33,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:08:33,329 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:08:33,329 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:08:33,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:08:33,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:08:33,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:08:33,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:08:33,624 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:08:33,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2021-05-06 06:08:33,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4713faaa/24c117484bc54e98a24407e173829d42/FLAG5a54e65c6 [2021-05-06 06:08:34,149 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:08:34,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2021-05-06 06:08:34,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4713faaa/24c117484bc54e98a24407e173829d42/FLAG5a54e65c6 [2021-05-06 06:08:34,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4713faaa/24c117484bc54e98a24407e173829d42 [2021-05-06 06:08:34,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:08:34,183 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:08:34,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:08:34,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:08:34,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:08:34,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321f57a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34, skipping insertion in model container [2021-05-06 06:08:34,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:08:34,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:08:34,504 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c[11358,11371] [2021-05-06 06:08:34,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:08:34,519 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:08:34,580 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c[11358,11371] [2021-05-06 06:08:34,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:08:34,599 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:08:34,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34 WrapperNode [2021-05-06 06:08:34,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:08:34,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:08:34,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:08:34,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:08:34,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (1/1) ... [2021-05-06 06:08:34,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:08:34,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:08:34,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:08:34,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:08:34,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (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 [2021-05-06 06:08:34,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:08:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:08:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:08:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:08:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2021-05-06 06:08:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2021-05-06 06:08:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2021-05-06 06:08:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2021-05-06 06:08:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2021-05-06 06:08:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2021-05-06 06:08:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2021-05-06 06:08:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2021-05-06 06:08:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:08:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:08:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:08:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:08:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:08:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:08:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:08:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2021-05-06 06:08:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-06 06:08:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-06 06:08:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2021-05-06 06:08:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2021-05-06 06:08:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2021-05-06 06:08:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2021-05-06 06:08:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-06 06:08:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2021-05-06 06:08:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2021-05-06 06:08:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-06 06:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-06 06:08:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:08:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-05-06 06:08:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:08:35,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:08:35,191 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-05-06 06:08:35,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:35 BoogieIcfgContainer [2021-05-06 06:08:35,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:08:35,193 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:08:35,193 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:08:35,194 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:08:35,195 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:35" (1/1) ... [2021-05-06 06:08:35,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:08:35 BasicIcfg [2021-05-06 06:08:35,211 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:08:35,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:08:35,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:08:35,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:08:35,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:08:34" (1/4) ... [2021-05-06 06:08:35,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30119b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:08:35, skipping insertion in model container [2021-05-06 06:08:35,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:34" (2/4) ... [2021-05-06 06:08:35,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30119b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:08:35, skipping insertion in model container [2021-05-06 06:08:35,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:35" (3/4) ... [2021-05-06 06:08:35,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30119b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:08:35, skipping insertion in model container [2021-05-06 06:08:35,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:08:35" (4/4) ... [2021-05-06 06:08:35,216 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_4.cJordan [2021-05-06 06:08:35,219 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:08:35,222 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:08:35,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:08:35,244 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:08:35,244 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:08:35,244 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:08:35,244 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:08:35,245 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:08:35,245 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:08:35,245 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:08:35,245 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:08:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 100 states have (on average 1.54) internal successors, (154), 102 states have internal predecessors, (154), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 06:08:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-06 06:08:35,262 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:08:35,262 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-06 06:08:35,262 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:08:35,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:08:35,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1746528498, now seen corresponding path program 1 times [2021-05-06 06:08:35,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:08:35,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100188302] [2021-05-06 06:08:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:08:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:08:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:35,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 06:08:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-06 06:08:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-06 06:08:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-06 06:08:35,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:08:35,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100188302] [2021-05-06 06:08:35,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100188302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:08:35,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:08:35,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:08:35,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441469620] [2021-05-06 06:08:35,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:08:35,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:08:35,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:08:35,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:08:35,572 INFO L87 Difference]: Start difference. First operand has 129 states, 100 states have (on average 1.54) internal successors, (154), 102 states have internal predecessors, (154), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 06:08:35,720 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-06 06:08:36,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:08:36,050 INFO L93 Difference]: Finished difference Result 131 states and 179 transitions. [2021-05-06 06:08:36,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:08:36,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-05-06 06:08:36,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:08:36,058 INFO L225 Difference]: With dead ends: 131 [2021-05-06 06:08:36,058 INFO L226 Difference]: Without dead ends: 120 [2021-05-06 06:08:36,059 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 249.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:08:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-06 06:08:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-06 06:08:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 95 states have (on average 1.4631578947368422) internal successors, (139), 96 states have internal predecessors, (139), 16 states have call successors, (16), 11 states have call predecessors, (16), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 06:08:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 167 transitions. [2021-05-06 06:08:36,105 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 167 transitions. Word has length 47 [2021-05-06 06:08:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:08:36,106 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 167 transitions. [2021-05-06 06:08:36,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 06:08:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 167 transitions. [2021-05-06 06:08:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-06 06:08:36,108 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:08:36,108 INFO L523 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] [2021-05-06 06:08:36,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:08:36,108 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:08:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:08:36,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1478723201, now seen corresponding path program 1 times [2021-05-06 06:08:36,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:08:36,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660951842] [2021-05-06 06:08:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:08:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:36,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:08:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:36,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 06:08:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-06 06:08:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-06 06:08:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:08:36,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:08:36,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660951842] [2021-05-06 06:08:36,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660951842] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:08:36,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:08:36,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 06:08:36,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337930790] [2021-05-06 06:08:36,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 06:08:36,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:08:36,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 06:08:36,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 06:08:36,304 INFO L87 Difference]: Start difference. First operand 120 states and 167 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 06:08:37,081 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-05-06 06:08:37,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:08:37,183 INFO L93 Difference]: Finished difference Result 118 states and 164 transitions. [2021-05-06 06:08:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:08:37,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2021-05-06 06:08:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:08:37,184 INFO L225 Difference]: With dead ends: 118 [2021-05-06 06:08:37,184 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:08:37,185 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 536.7ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-06 06:08:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:08:37,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:08:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 06:08:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:08:37,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-05-06 06:08:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:08:37,185 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:08:37,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 06:08:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:08:37,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:08:37,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:08:37,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:08:37 BasicIcfg [2021-05-06 06:08:37,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:08:37,190 INFO L168 Benchmark]: Toolchain (without parser) took 3006.34 ms. Allocated memory was 169.9 MB in the beginning and 220.2 MB in the end (delta: 50.3 MB). Free memory was 134.1 MB in the beginning and 146.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 38.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:37,190 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 169.9 MB. Free memory is still 151.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:08:37,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.89 ms. Allocated memory is still 169.9 MB. Free memory was 133.9 MB in the beginning and 145.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:37,191 INFO L168 Benchmark]: Boogie Preprocessor took 50.34 ms. Allocated memory is still 169.9 MB. Free memory was 145.1 MB in the beginning and 141.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:37,191 INFO L168 Benchmark]: RCFGBuilder took 541.55 ms. Allocated memory is still 169.9 MB. Free memory was 141.3 MB in the beginning and 141.4 MB in the end (delta: -41.1 kB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:37,191 INFO L168 Benchmark]: IcfgTransformer took 18.25 ms. Allocated memory is still 169.9 MB. Free memory was 141.4 MB in the beginning and 138.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:37,192 INFO L168 Benchmark]: TraceAbstraction took 1976.47 ms. Allocated memory was 169.9 MB in the beginning and 220.2 MB in the end (delta: 50.3 MB). Free memory was 138.2 MB in the beginning and 146.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:37,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 169.9 MB. Free memory is still 151.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 402.89 ms. Allocated memory is still 169.9 MB. Free memory was 133.9 MB in the beginning and 145.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.34 ms. Allocated memory is still 169.9 MB. Free memory was 145.1 MB in the beginning and 141.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 541.55 ms. Allocated memory is still 169.9 MB. Free memory was 141.3 MB in the beginning and 141.4 MB in the end (delta: -41.1 kB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 18.25 ms. Allocated memory is still 169.9 MB. Free memory was 141.4 MB in the beginning and 138.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1976.47 ms. Allocated memory was 169.9 MB in the beginning and 220.2 MB in the end (delta: 50.3 MB). Free memory was 138.2 MB in the beginning and 146.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 463]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1943.3ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 11.8ms, AutomataDifference: 1377.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 275 SDtfs, 407 SDslu, 223 SDs, 0 SdLazy, 519 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 626.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 786.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.0ms SsaConstructionTime, 67.3ms SatisfiabilityAnalysisTime, 359.6ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...