/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/float-newlib/float_req_bl_1251.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 16:53:17,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 16:53:17,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 16:53:17,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 16:53:17,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 16:53:17,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 16:53:17,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 16:53:17,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 16:53:17,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 16:53:17,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 16:53:17,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 16:53:17,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 16:53:17,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 16:53:17,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 16:53:17,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 16:53:17,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 16:53:17,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 16:53:17,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 16:53:17,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 16:53:17,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 16:53:17,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 16:53:17,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 16:53:17,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 16:53:17,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 16:53:17,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 16:53:17,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 16:53:17,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 16:53:17,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 16:53:17,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 16:53:17,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 16:53:17,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 16:53:17,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 16:53:17,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 16:53:17,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 16:53:17,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 16:53:17,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 16:53:17,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 16:53:17,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 16:53:17,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 16:53:17,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 16:53:17,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 16:53:17,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 16:53:17,935 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 16:53:17,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 16:53:17,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 16:53:17,936 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 16:53:17,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 16:53:17,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 16:53:17,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 16:53:17,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 16:53:17,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 16:53:17,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:53:17,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 16:53:17,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 16:53:17,938 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 16:53:17,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 16:53:18,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 16:53:18,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 16:53:18,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 16:53:18,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 16:53:18,138 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 16:53:18,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1251.c [2022-01-31 16:53:18,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4621f23e5/f65a7a7560334b2c82009f5b82bbf42b/FLAGf7d3116f0 [2022-01-31 16:53:18,550 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 16:53:18,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1251.c [2022-01-31 16:53:18,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4621f23e5/f65a7a7560334b2c82009f5b82bbf42b/FLAGf7d3116f0 [2022-01-31 16:53:18,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4621f23e5/f65a7a7560334b2c82009f5b82bbf42b [2022-01-31 16:53:19,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 16:53:19,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 16:53:19,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 16:53:19,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 16:53:19,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 16:53:19,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:53:18" (1/1) ... [2022-01-31 16:53:19,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6e03e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19, skipping insertion in model container [2022-01-31 16:53:19,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:53:18" (1/1) ... [2022-01-31 16:53:19,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 16:53:19,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 16:53:19,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1251.c[1980,1993] [2022-01-31 16:53:19,158 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1251.c[2139,2152] [2022-01-31 16:53:19,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:53:19,163 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 16:53:19,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1251.c[1980,1993] [2022-01-31 16:53:19,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1251.c[2139,2152] [2022-01-31 16:53:19,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:53:19,186 INFO L208 MainTranslator]: Completed translation [2022-01-31 16:53:19,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19 WrapperNode [2022-01-31 16:53:19,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 16:53:19,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 16:53:19,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 16:53:19,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 16:53:19,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 16:53:19,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 16:53:19,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 16:53:19,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 16:53:19,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:53:19,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:53:19,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 16:53:19,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 16:53:19,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 16:53:19,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 16:53:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 16:53:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-01-31 16:53:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2022-01-31 16:53:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-01-31 16:53:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 16:53:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 16:53:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 16:53:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 16:53:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 16:53:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 16:53:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-01-31 16:53:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 16:53:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 16:53:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 16:53:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 16:53:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2022-01-31 16:53:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-01-31 16:53:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 16:53:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 16:53:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 16:53:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 16:53:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 16:53:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 16:53:19,386 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 16:53:19,388 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 16:53:19,586 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 16:53:19,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 16:53:19,591 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 16:53:19,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:53:19 BoogieIcfgContainer [2022-01-31 16:53:19,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 16:53:19,593 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 16:53:19,593 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 16:53:19,597 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 16:53:19,599 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:53:19" (1/1) ... [2022-01-31 16:53:19,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:53:19 BasicIcfg [2022-01-31 16:53:19,625 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 16:53:19,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 16:53:19,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 16:53:19,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 16:53:19,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:53:18" (1/4) ... [2022-01-31 16:53:19,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2504d72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:53:19, skipping insertion in model container [2022-01-31 16:53:19,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:19" (2/4) ... [2022-01-31 16:53:19,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2504d72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:53:19, skipping insertion in model container [2022-01-31 16:53:19,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:53:19" (3/4) ... [2022-01-31 16:53:19,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2504d72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:53:19, skipping insertion in model container [2022-01-31 16:53:19,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:53:19" (4/4) ... [2022-01-31 16:53:19,632 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.cJordan [2022-01-31 16:53:19,638 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 16:53:19,638 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-31 16:53:19,682 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 16:53:19,689 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 16:53:19,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-31 16:53:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 47 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 16:53:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 16:53:19,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:19,718 INFO L514 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] [2022-01-31 16:53:19,718 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:19,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1261938874, now seen corresponding path program 1 times [2022-01-31 16:53:19,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:19,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881599305] [2022-01-31 16:53:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:19,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:53:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 16:53:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 16:53:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 16:53:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 16:53:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 16:53:19,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:53:19,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881599305] [2022-01-31 16:53:19,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881599305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:53:19,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:53:19,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:53:19,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890685171] [2022-01-31 16:53:19,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:53:19,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:53:19,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:53:19,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:53:19,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:53:19,930 INFO L87 Difference]: Start difference. First operand has 66 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 47 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 16:53:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:53:20,130 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-01-31 16:53:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 16:53:20,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-01-31 16:53:20,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:53:20,137 INFO L225 Difference]: With dead ends: 69 [2022-01-31 16:53:20,138 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 16:53:20,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 16:53:20,151 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 80 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:53:20,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 75 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:53:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 16:53:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-01-31 16:53:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 43 states have internal predecessors, (55), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 16:53:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2022-01-31 16:53:20,180 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2022-01-31 16:53:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:53:20,181 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2022-01-31 16:53:20,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 16:53:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2022-01-31 16:53:20,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 16:53:20,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:20,191 INFO L514 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] [2022-01-31 16:53:20,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 16:53:20,200 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1293737466, now seen corresponding path program 1 times [2022-01-31 16:53:20,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:20,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963796457] [2022-01-31 16:53:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:20,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:53:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 16:53:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 16:53:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 16:53:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 16:53:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 16:53:20,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:53:20,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963796457] [2022-01-31 16:53:20,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963796457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:53:20,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:53:20,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 16:53:20,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079732932] [2022-01-31 16:53:20,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:53:20,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 16:53:20,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:53:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 16:53:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 16:53:20,338 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 16:53:20,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:53:20,578 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2022-01-31 16:53:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 16:53:20,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-01-31 16:53:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:53:20,580 INFO L225 Difference]: With dead ends: 70 [2022-01-31 16:53:20,580 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 16:53:20,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-31 16:53:20,581 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 101 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:53:20,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 70 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:53:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 16:53:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2022-01-31 16:53:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 16:53:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2022-01-31 16:53:20,589 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 37 [2022-01-31 16:53:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:53:20,589 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2022-01-31 16:53:20,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 16:53:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2022-01-31 16:53:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 16:53:20,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:20,591 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:53:20,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 16:53:20,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2016564294, now seen corresponding path program 1 times [2022-01-31 16:53:20,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:20,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373034089] [2022-01-31 16:53:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:20,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:53:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 16:53:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 16:53:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 16:53:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 16:53:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 16:53:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 16:53:20,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:53:20,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373034089] [2022-01-31 16:53:20,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373034089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:53:20,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:53:20,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 16:53:20,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139915579] [2022-01-31 16:53:20,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:53:20,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 16:53:20,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:53:20,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 16:53:20,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 16:53:20,721 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 16:53:20,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:53:20,934 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2022-01-31 16:53:20,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 16:53:20,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2022-01-31 16:53:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:53:20,939 INFO L225 Difference]: With dead ends: 67 [2022-01-31 16:53:20,939 INFO L226 Difference]: Without dead ends: 67 [2022-01-31 16:53:20,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-31 16:53:20,945 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 16:53:20,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 69 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 16:53:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-31 16:53:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-01-31 16:53:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-31 16:53:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2022-01-31 16:53:20,951 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 42 [2022-01-31 16:53:20,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:53:20,952 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2022-01-31 16:53:20,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 16:53:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2022-01-31 16:53:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 16:53:20,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:20,953 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:53:20,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 16:53:20,954 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1733276116, now seen corresponding path program 1 times [2022-01-31 16:53:20,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:20,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594019131] [2022-01-31 16:53:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:20,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:53:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 16:53:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 16:53:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 16:53:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 16:53:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 16:53:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 16:53:21,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:53:21,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594019131] [2022-01-31 16:53:21,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594019131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:53:21,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:53:21,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 16:53:21,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127444940] [2022-01-31 16:53:21,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:53:21,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 16:53:21,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:53:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 16:53:21,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 16:53:21,067 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 16:53:21,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:53:21,242 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2022-01-31 16:53:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 16:53:21,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 45 [2022-01-31 16:53:21,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:53:21,246 INFO L225 Difference]: With dead ends: 71 [2022-01-31 16:53:21,246 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 16:53:21,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-31 16:53:21,254 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 16:53:21,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 69 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 16:53:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 16:53:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2022-01-31 16:53:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-31 16:53:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2022-01-31 16:53:21,260 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 45 [2022-01-31 16:53:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:53:21,260 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2022-01-31 16:53:21,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 16:53:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2022-01-31 16:53:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 16:53:21,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:21,261 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:53:21,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 16:53:21,262 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1222741939, now seen corresponding path program 1 times [2022-01-31 16:53:21,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:21,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062467189] [2022-01-31 16:53:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:21,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:53:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 16:53:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 16:53:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 16:53:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 16:53:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 16:53:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 16:53:21,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:53:21,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062467189] [2022-01-31 16:53:21,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062467189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:53:21,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:53:21,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 16:53:21,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76106763] [2022-01-31 16:53:21,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:53:21,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 16:53:21,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:53:21,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 16:53:21,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 16:53:21,351 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 16:53:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:53:21,470 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-01-31 16:53:21,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 16:53:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2022-01-31 16:53:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:53:21,472 INFO L225 Difference]: With dead ends: 68 [2022-01-31 16:53:21,472 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 16:53:21,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 16:53:21,474 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 71 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 16:53:21,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 68 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 16:53:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 16:53:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-01-31 16:53:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 49 states have internal predecessors, (61), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-31 16:53:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2022-01-31 16:53:21,487 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 45 [2022-01-31 16:53:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:53:21,487 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2022-01-31 16:53:21,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 16:53:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2022-01-31 16:53:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 16:53:21,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:21,490 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:53:21,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 16:53:21,490 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1748403765, now seen corresponding path program 1 times [2022-01-31 16:53:21,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62723110] [2022-01-31 16:53:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:21,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:53:21,526 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 16:53:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:53:21,555 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 16:53:21,555 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 16:53:21,556 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-31 16:53:21,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-31 16:53:21,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 16:53:21,560 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-01-31 16:53:21,562 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 16:53:21,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:53:21 BasicIcfg [2022-01-31 16:53:21,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 16:53:21,581 INFO L158 Benchmark]: Toolchain (without parser) took 2580.87ms. Allocated memory was 191.9MB in the beginning and 277.9MB in the end (delta: 86.0MB). Free memory was 138.5MB in the beginning and 193.0MB in the end (delta: -54.4MB). Peak memory consumption was 32.4MB. Max. memory is 8.0GB. [2022-01-31 16:53:21,582 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 154.7MB in the beginning and 154.6MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 16:53:21,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.35ms. Allocated memory is still 191.9MB. Free memory was 138.3MB in the beginning and 163.5MB in the end (delta: -25.3MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2022-01-31 16:53:21,582 INFO L158 Benchmark]: Boogie Preprocessor took 43.45ms. Allocated memory is still 191.9MB. Free memory was 163.5MB in the beginning and 161.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 16:53:21,582 INFO L158 Benchmark]: RCFGBuilder took 361.21ms. Allocated memory is still 191.9MB. Free memory was 160.9MB in the beginning and 146.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-01-31 16:53:21,582 INFO L158 Benchmark]: IcfgTransformer took 31.94ms. Allocated memory is still 191.9MB. Free memory was 146.7MB in the beginning and 145.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 16:53:21,583 INFO L158 Benchmark]: TraceAbstraction took 1954.63ms. Allocated memory was 191.9MB in the beginning and 277.9MB in the end (delta: 86.0MB). Free memory was 144.6MB in the beginning and 193.0MB in the end (delta: -48.3MB). Peak memory consumption was 38.7MB. Max. memory is 8.0GB. [2022-01-31 16:53:21,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 154.7MB in the beginning and 154.6MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.35ms. Allocated memory is still 191.9MB. Free memory was 138.3MB in the beginning and 163.5MB in the end (delta: -25.3MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.45ms. Allocated memory is still 191.9MB. Free memory was 163.5MB in the beginning and 161.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 361.21ms. Allocated memory is still 191.9MB. Free memory was 160.9MB in the beginning and 146.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * IcfgTransformer took 31.94ms. Allocated memory is still 191.9MB. Free memory was 146.7MB in the beginning and 145.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1954.63ms. Allocated memory was 191.9MB in the beginning and 277.9MB in the end (delta: 86.0MB). Free memory was 144.6MB in the beginning and 193.0MB in the end (delta: -48.3MB). Peak memory consumption was 38.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 76]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L69] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578692] [L57] return x != x; VAL [\old(x)=4286578692, \result=1, x=4286578692] [L69] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=4286578692, y=4286578691] [L69] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=4286578692, y=4286578691] [L69] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578691] [L57] return x != x; VAL [\old(x)=4286578691, \result=0, x=4286578691] [L69] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578692, y=4286578691] [L69] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578692, y=4286578691] [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578692, y=4286578691] [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L72] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578692, \old(y)=4286578691] [L46] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578692] [L23] __uint32_t w; VAL [\old(x)=4286578692, x=4286578692] [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; VAL [\old(x)=4286578692, \result=0, w=4286578689, x=4286578692] [L46] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578692, \old(y)=4286578691, __fpclassify_float(x)=0, x=4286578692, y=4286578691] [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; VAL [\old(x)=4286578692, \old(y)=4286578691, \result=4286578691, x=4286578692, y=4286578691] [L72] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578691, x=4286578692, y=4286578691] [L72] float res = fmax_float(x, y); [L75] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578692] [L57] return x != x; VAL [\old(x)=4286578692, \result=1, x=4286578692] [L75] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=4286578691, x=4286578692, y=4286578691] [L75] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=4286578691, x=4286578692, y=4286578691] [L75] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578691] [L57] return x != x; VAL [\old(x)=4286578691, \result=0, x=4286578691] [L75] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578691, x=4286578692, y=4286578691] [L75] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578691, x=4286578692, y=4286578691] [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L76] reach_error() VAL [res=4286578691, x=4286578692, y=4286578691] - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 425 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 351 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 841 IncrementalHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 335 mSDtfsCounter, 841 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 33/33 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 16:53:21,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...