/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_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:08:28,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:08:28,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:08:28,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:08:28,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:08:28,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:08:28,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:08:28,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:08:28,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:08:28,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:08:28,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:08:28,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:08:28,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:08:28,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:08:28,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:08:28,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:08:28,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:08:28,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:08:28,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:08:28,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:08:28,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:08:28,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:08:28,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:08:28,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:08:28,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 06:08:28,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 06:08:28,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 06:08:28,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 06:08:28,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 06:08:28,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 06:08:28,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 06:08:28,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 06:08:28,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 06:08:28,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 06:08:28,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 06:08:28,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 06:08:28,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 06:08:28,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 06:08:28,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:08:28,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:08:28,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:08:28,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:08:28,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:08:28,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:08:28,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:08:28,920 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:08:28,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:08:28,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:08:28,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:08:28,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:08:28,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:08:28,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:08:28,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:08:28,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:08:28,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:08:28,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:08:28,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:08:28,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:08:28,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:08:28,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:08:28,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:08:28,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:08:28,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:08:28,924 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:08:28,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:08:29,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:08:29,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:08:29,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:08:29,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:08:29,240 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:08:29,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2021-05-06 06:08:29,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342eb2bba/f52ce24faf4745a3ad9329f31c0f9126/FLAG95c8cc1c2 [2021-05-06 06:08:29,682 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:08:29,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2021-05-06 06:08:29,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342eb2bba/f52ce24faf4745a3ad9329f31c0f9126/FLAG95c8cc1c2 [2021-05-06 06:08:30,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342eb2bba/f52ce24faf4745a3ad9329f31c0f9126 [2021-05-06 06:08:30,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:08:30,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:08:30,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:08:30,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:08:30,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:08:30,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29412388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30, skipping insertion in model container [2021-05-06 06:08:30,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:08:30,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:08:30,355 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_3.c[11322,11335] [2021-05-06 06:08:30,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:08:30,367 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:08:30,440 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_3.c[11322,11335] [2021-05-06 06:08:30,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:08:30,462 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:08:30,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30 WrapperNode [2021-05-06 06:08:30,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:08:30,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:08:30,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:08:30,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:08:30,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:08:30,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:08:30,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:08:30,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:08:30,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (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 06:08:30,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:08:30,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:08:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:08:30,597 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-06 06:08:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-05-06 06:08:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:08:31,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:08:31,114 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-05-06 06:08:31,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:31 BoogieIcfgContainer [2021-05-06 06:08:31,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:08:31,116 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:08:31,116 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:08:31,116 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:08:31,118 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:31" (1/1) ... [2021-05-06 06:08:31,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:08:31 BasicIcfg [2021-05-06 06:08:31,135 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:08:31,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:08:31,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:08:31,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:08:31,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:08:30" (1/4) ... [2021-05-06 06:08:31,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440d8b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:08:31, skipping insertion in model container [2021-05-06 06:08:31,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:30" (2/4) ... [2021-05-06 06:08:31,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440d8b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:08:31, skipping insertion in model container [2021-05-06 06:08:31,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:31" (3/4) ... [2021-05-06 06:08:31,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440d8b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:08:31, skipping insertion in model container [2021-05-06 06:08:31,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:08:31" (4/4) ... [2021-05-06 06:08:31,140 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_3.cJordan [2021-05-06 06:08:31,144 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:08:31,147 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:08:31,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:08:31,171 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:08:31,171 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:08:31,171 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:08:31,171 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:08:31,171 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:08:31,171 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:08:31,171 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:08:31,171 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:08:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 99 states have (on average 1.5353535353535352) internal successors, (152), 101 states have internal predecessors, (152), 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 06:08:31,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 06:08:31,189 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:08:31,190 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] [2021-05-06 06:08:31,190 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:08:31,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:08:31,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1557733986, now seen corresponding path program 1 times [2021-05-06 06:08:31,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:08:31,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311742964] [2021-05-06 06:08:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:08:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,582 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-06 06:08:31,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:08:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 06:08:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-06 06:08:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,686 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 06:08:31,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:08:31,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311742964] [2021-05-06 06:08:31,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311742964] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:08:31,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:08:31,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:08:31,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880020584] [2021-05-06 06:08:31,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:08:31,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:08:31,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:08:31,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:08:31,704 INFO L87 Difference]: Start difference. First operand has 128 states, 99 states have (on average 1.5353535353535352) internal successors, (152), 101 states have internal predecessors, (152), 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 6.75) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-05-06 06:08:31,844 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-06 06:08:32,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:08:32,202 INFO L93 Difference]: Finished difference Result 130 states and 177 transitions. [2021-05-06 06:08:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:08:32,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 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 39 [2021-05-06 06:08:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:08:32,212 INFO L225 Difference]: With dead ends: 130 [2021-05-06 06:08:32,212 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 06:08:32,213 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 297.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:08:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 06:08:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-06 06:08:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 95 states have internal predecessors, (137), 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 06:08:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2021-05-06 06:08:32,262 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2021-05-06 06:08:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:08:32,270 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2021-05-06 06:08:32,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-05-06 06:08:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2021-05-06 06:08:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 06:08:32,273 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:08:32,273 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] [2021-05-06 06:08:32,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:08:32,273 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:08:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:08:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1372227393, now seen corresponding path program 1 times [2021-05-06 06:08:32,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:08:32,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697804593] [2021-05-06 06:08:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:08:32,310 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:08:32,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253666846] [2021-05-06 06:08:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:08:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:32,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 06:08:32,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:08:32,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:08:32,630 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 06:08:32,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:08:32,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697804593] [2021-05-06 06:08:32,630 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:08:32,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253666846] [2021-05-06 06:08:32,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253666846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:08:32,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:08:32,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:08:32,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781236944] [2021-05-06 06:08:32,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:08:32,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:08:32,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:08:32,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:08:32,632 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 06:08:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:08:32,646 INFO L93 Difference]: Finished difference Result 117 states and 163 transitions. [2021-05-06 06:08:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:08:32,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 2 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 39 [2021-05-06 06:08:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:08:32,646 INFO L225 Difference]: With dead ends: 117 [2021-05-06 06:08:32,646 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:08:32,647 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:08:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:08:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:08:32,647 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 06:08:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:08:32,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-05-06 06:08:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:08:32,648 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:08:32,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 06:08:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:08:32,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:08:32,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 06:08:32,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:08:32 BasicIcfg [2021-05-06 06:08:32,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:08:32,871 INFO L168 Benchmark]: Toolchain (without parser) took 2829.60 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 145.1 MB in the beginning and 111.2 MB in the end (delta: 33.9 MB). Peak memory consumption was 70.9 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,871 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 181.4 MB. Free memory is still 162.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:08:32,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.76 ms. Allocated memory is still 181.4 MB. Free memory was 144.9 MB in the beginning and 155.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,872 INFO L168 Benchmark]: Boogie Preprocessor took 77.78 ms. Allocated memory is still 181.4 MB. Free memory was 155.7 MB in the beginning and 152.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,872 INFO L168 Benchmark]: RCFGBuilder took 572.49 ms. Allocated memory is still 181.4 MB. Free memory was 152.2 MB in the beginning and 138.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,872 INFO L168 Benchmark]: IcfgTransformer took 19.78 ms. Allocated memory is still 181.4 MB. Free memory was 138.3 MB in the beginning and 135.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,873 INFO L168 Benchmark]: TraceAbstraction took 1733.49 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 135.1 MB in the beginning and 111.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,875 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 181.4 MB. Free memory is still 162.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 410.76 ms. Allocated memory is still 181.4 MB. Free memory was 144.9 MB in the beginning and 155.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.78 ms. Allocated memory is still 181.4 MB. Free memory was 155.7 MB in the beginning and 152.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 572.49 ms. Allocated memory is still 181.4 MB. Free memory was 152.2 MB in the beginning and 138.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * IcfgTransformer took 19.78 ms. Allocated memory is still 181.4 MB. Free memory was 138.3 MB in the beginning and 135.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1733.49 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 135.1 MB in the beginning and 111.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 60.6 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, 128 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1697.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.5ms, AutomataDifference: 536.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 305 SDtfs, 209 SDslu, 346 SDs, 0 SdLazy, 112 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 268.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 305.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 46.1ms SsaConstructionTime, 167.9ms SatisfiabilityAnalysisTime, 478.3ms InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 221 SizeOfPredicates, 1 NumberOfNonLiveVariables, 579 ConjunctsInSsa, 3 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...