/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_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:23:30,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:23:30,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:23:30,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:23:30,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:23:30,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:23:30,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:23:30,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:23:30,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:23:30,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:23:30,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:23:30,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:23:30,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:23:30,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:23:30,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:23:30,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:23:30,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:23:30,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:23:30,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:23:30,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:23:30,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:23:30,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:23:30,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:23:30,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:23:30,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 18:23:30,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 18:23:30,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 18:23:30,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 18:23:30,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 18:23:30,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 18:23:30,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 18:23:30,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 18:23:30,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 18:23:30,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 18:23:30,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 18:23:30,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 18:23:30,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 18:23:30,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 18:23:30,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:23:30,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:23:30,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:23:30,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:23:30,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:23:30,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:23:30,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:23:30,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:23:30,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:23:30,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:23:30,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:23:30,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:23:30,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:23:30,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:23:30,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:23:30,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:23:30,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:23:30,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:23:30,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:23:30,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:23:30,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:23:30,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:23:30,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:23:30,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:23:30,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:23:30,598 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:23:30,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:23:30,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:23:30,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:23:30,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:23:30,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:23:30,830 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:23:30,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2021-05-02 18:23:30,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40ad697f/b4b305ea72b649ab900efc2a9b504693/FLAGee208d859 [2021-05-02 18:23:31,293 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:23:31,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2021-05-02 18:23:31,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40ad697f/b4b305ea72b649ab900efc2a9b504693/FLAGee208d859 [2021-05-02 18:23:31,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40ad697f/b4b305ea72b649ab900efc2a9b504693 [2021-05-02 18:23:31,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:23:31,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:23:31,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:23:31,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:23:31,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:23:31,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36569a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31, skipping insertion in model container [2021-05-02 18:23:31,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:23:31,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:23:31,927 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_1.c[11890,11903] [2021-05-02 18:23:31,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:23:31,935 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:23:31,976 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_1.c[11890,11903] [2021-05-02 18:23:31,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:23:31,996 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:23:31,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31 WrapperNode [2021-05-02 18:23:31,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:23:31,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:23:31,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:23:31,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:23:32,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:32,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:32,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:32,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:32,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:32,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:32,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:32,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:23:32,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:23:32,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:23:32,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:23:32,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (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 [2021-05-02 18:23:32,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:23:32,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:23:32,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_107 [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_110 [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_113 [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_114 [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_115 [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_117 [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_118 [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:23:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:23:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:23:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:23:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_107 [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_110 [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_113 [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_114 [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_115 [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_117 [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_118 [2021-05-02 18:23:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-05-02 18:23:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:23:32,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:23:32,752 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-05-02 18:23:32,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:23:32 BoogieIcfgContainer [2021-05-02 18:23:32,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:23:32,754 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:23:32,755 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:23:32,755 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:23:32,757 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:23:32" (1/1) ... [2021-05-02 18:23:32,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:23:32 BasicIcfg [2021-05-02 18:23:32,785 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:23:32,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:23:32,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:23:32,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:23:32,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:23:31" (1/4) ... [2021-05-02 18:23:32,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a4a3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:23:32, skipping insertion in model container [2021-05-02 18:23:32,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (2/4) ... [2021-05-02 18:23:32,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a4a3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:23:32, skipping insertion in model container [2021-05-02 18:23:32,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:23:32" (3/4) ... [2021-05-02 18:23:32,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a4a3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:23:32, skipping insertion in model container [2021-05-02 18:23:32,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:23:32" (4/4) ... [2021-05-02 18:23:32,791 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_1.cJordan [2021-05-02 18:23:32,795 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:23:32,798 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:23:32,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:23:32,830 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:23:32,831 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:23:32,831 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:23:32,831 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:23:32,831 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:23:32,831 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:23:32,831 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:23:32,831 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:23:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 100 states have internal predecessors, (151), 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) [2021-05-02 18:23:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 18:23:32,847 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:32,848 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] [2021-05-02 18:23:32,848 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:32,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1019923025, now seen corresponding path program 1 times [2021-05-02 18:23:32,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:32,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110110582] [2021-05-02 18:23:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:33,196 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 18:23:33,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 18:23:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-02 18:23:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:33,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:33,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110110582] [2021-05-02 18:23:33,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110110582] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:23:33,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:23:33,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:23:33,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153300375] [2021-05-02 18:23:33,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:23:33,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:33,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:23:33,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:23:33,283 INFO L87 Difference]: Start difference. First operand has 127 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 100 states have internal predecessors, (151), 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 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 18:23:33,408 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-02 18:23:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:33,764 INFO L93 Difference]: Finished difference Result 129 states and 176 transitions. [2021-05-02 18:23:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:23:33,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-05-02 18:23:33,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:33,772 INFO L225 Difference]: With dead ends: 129 [2021-05-02 18:23:33,772 INFO L226 Difference]: Without dead ends: 118 [2021-05-02 18:23:33,773 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 287.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:23:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-05-02 18:23:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-05-02 18:23:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 94 states have internal predecessors, (136), 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) [2021-05-02 18:23:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 164 transitions. [2021-05-02 18:23:33,806 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 164 transitions. Word has length 38 [2021-05-02 18:23:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:33,806 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 164 transitions. [2021-05-02 18:23:33,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 18:23:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 164 transitions. [2021-05-02 18:23:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 18:23:33,808 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:33,808 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] [2021-05-02 18:23:33,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:23:33,808 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1240866738, now seen corresponding path program 1 times [2021-05-02 18:23:33,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:33,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004587015] [2021-05-02 18:23:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:34,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 18:23:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:34,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-02 18:23:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:34,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:34,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004587015] [2021-05-02 18:23:34,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004587015] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:23:34,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:23:34,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:23:34,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511566782] [2021-05-02 18:23:34,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:23:34,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:34,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:23:34,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:23:34,071 INFO L87 Difference]: Start difference. First operand 118 states and 164 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 18:23:34,194 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-02 18:23:34,633 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-05-02 18:23:34,742 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-05-02 18:23:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:34,899 INFO L93 Difference]: Finished difference Result 116 states and 162 transitions. [2021-05-02 18:23:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:23:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-05-02 18:23:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:34,900 INFO L225 Difference]: With dead ends: 116 [2021-05-02 18:23:34,900 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:23:34,901 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 480.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:23:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:23:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:23:34,901 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) [2021-05-02 18:23:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:23:34,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-05-02 18:23:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:34,902 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:23:34,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 18:23:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:23:34,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:23:34,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:23:34,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:23:34 BasicIcfg [2021-05-02 18:23:34,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:23:34,907 INFO L168 Benchmark]: Toolchain (without parser) took 3240.99 ms. Allocated memory was 190.8 MB in the beginning and 252.7 MB in the end (delta: 61.9 MB). Free memory was 154.9 MB in the beginning and 105.7 MB in the end (delta: 49.2 MB). Peak memory consumption was 111.3 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:34,907 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 190.8 MB. Free memory is still 172.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:23:34,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.06 ms. Allocated memory is still 190.8 MB. Free memory was 154.8 MB in the beginning and 165.3 MB in the end (delta: -10.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:34,908 INFO L168 Benchmark]: Boogie Preprocessor took 81.92 ms. Allocated memory is still 190.8 MB. Free memory was 165.3 MB in the beginning and 161.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:34,908 INFO L168 Benchmark]: RCFGBuilder took 673.78 ms. Allocated memory is still 190.8 MB. Free memory was 161.6 MB in the beginning and 148.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:34,909 INFO L168 Benchmark]: IcfgTransformer took 30.79 ms. Allocated memory is still 190.8 MB. Free memory was 148.9 MB in the beginning and 146.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:34,909 INFO L168 Benchmark]: TraceAbstraction took 2119.66 ms. Allocated memory was 190.8 MB in the beginning and 252.7 MB in the end (delta: 61.9 MB). Free memory was 145.7 MB in the beginning and 105.7 MB in the end (delta: 40.0 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:34,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 190.8 MB. Free memory is still 172.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.06 ms. Allocated memory is still 190.8 MB. Free memory was 154.8 MB in the beginning and 165.3 MB in the end (delta: -10.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.92 ms. Allocated memory is still 190.8 MB. Free memory was 165.3 MB in the beginning and 161.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 673.78 ms. Allocated memory is still 190.8 MB. Free memory was 161.6 MB in the beginning and 148.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. * IcfgTransformer took 30.79 ms. Allocated memory is still 190.8 MB. Free memory was 148.9 MB in the beginning and 146.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2119.66 ms. Allocated memory was 190.8 MB in the beginning and 252.7 MB in the end (delta: 61.9 MB). Free memory was 145.7 MB in the beginning and 105.7 MB in the end (delta: 40.0 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 489]: 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, 127 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2074.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.1ms, AutomataDifference: 1330.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 274 SDtfs, 401 SDslu, 166 SDs, 0 SdLazy, 407 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 645.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 767.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.1ms SsaConstructionTime, 90.6ms SatisfiabilityAnalysisTime, 515.9ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...