./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem07_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem07_label42.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8bbc9a798bf0c903a7e47ceeff27ebe8197fe0e6eaf0d86b6b6297bc583d1018 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 04:01:07,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 04:01:07,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 04:01:07,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 04:01:07,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 04:01:07,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 04:01:07,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 04:01:07,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 04:01:07,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 04:01:07,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 04:01:07,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 04:01:07,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 04:01:07,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 04:01:07,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 04:01:07,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 04:01:07,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 04:01:07,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 04:01:07,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 04:01:07,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 04:01:07,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 04:01:07,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 04:01:07,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 04:01:07,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 04:01:07,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 04:01:07,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 04:01:07,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 04:01:07,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 04:01:07,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 04:01:07,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 04:01:07,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 04:01:07,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 04:01:07,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 04:01:07,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 04:01:07,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 04:01:07,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 04:01:07,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 04:01:07,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 04:01:07,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 04:01:07,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 04:01:07,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 04:01:07,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 04:01:07,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 04:01:07,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 04:01:07,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 04:01:07,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 04:01:07,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 04:01:07,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 04:01:07,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 04:01:07,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 04:01:07,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 04:01:07,252 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 04:01:07,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 04:01:07,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 04:01:07,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 04:01:07,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 04:01:07,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 04:01:07,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 04:01:07,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 04:01:07,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 04:01:07,254 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 04:01:07,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 04:01:07,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 04:01:07,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 04:01:07,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 04:01:07,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 04:01:07,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 04:01:07,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:01:07,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 04:01:07,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 04:01:07,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 04:01:07,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 04:01:07,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 04:01:07,258 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 04:01:07,258 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 04:01:07,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 04:01:07,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 04:01:07,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bbc9a798bf0c903a7e47ceeff27ebe8197fe0e6eaf0d86b6b6297bc583d1018 [2021-12-17 04:01:07,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 04:01:07,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 04:01:07,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 04:01:07,515 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 04:01:07,515 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 04:01:07,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem07_label42.c [2021-12-17 04:01:07,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9695f54e/fa26468c522946d1af3256e6b38338be/FLAG951076a23 [2021-12-17 04:01:09,573 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 04:01:09,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label42.c [2021-12-17 04:01:09,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9695f54e/fa26468c522946d1af3256e6b38338be/FLAG951076a23 [2021-12-17 04:01:09,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9695f54e/fa26468c522946d1af3256e6b38338be [2021-12-17 04:01:09,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 04:01:09,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 04:01:09,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 04:01:09,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 04:01:09,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 04:01:09,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:01:09" (1/1) ... [2021-12-17 04:01:09,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69699e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:09, skipping insertion in model container [2021-12-17 04:01:09,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:01:09" (1/1) ... [2021-12-17 04:01:09,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 04:01:10,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 04:01:18,353 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label42.c[2768647,2768660] [2021-12-17 04:01:18,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:01:18,416 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 04:01:22,765 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label42.c[2768647,2768660] [2021-12-17 04:01:22,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:01:23,322 INFO L208 MainTranslator]: Completed translation [2021-12-17 04:01:23,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23 WrapperNode [2021-12-17 04:01:23,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 04:01:23,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 04:01:23,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 04:01:23,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 04:01:23,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:24,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:26,210 INFO L137 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773 [2021-12-17 04:01:26,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 04:01:26,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 04:01:26,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 04:01:26,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 04:01:26,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:26,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:26,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:26,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:27,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:27,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:28,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:28,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 04:01:28,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 04:01:28,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 04:01:28,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 04:01:28,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (1/1) ... [2021-12-17 04:01:28,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:01:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:01:28,705 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) [2021-12-17 04:01:28,711 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 [2021-12-17 04:01:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 04:01:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 04:01:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 04:01:28,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 04:01:28,939 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 04:01:28,941 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 04:01:59,697 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 04:01:59,740 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 04:01:59,740 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 04:01:59,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:01:59 BoogieIcfgContainer [2021-12-17 04:01:59,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 04:01:59,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 04:01:59,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 04:01:59,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 04:01:59,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:01:09" (1/3) ... [2021-12-17 04:01:59,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204c6735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:01:59, skipping insertion in model container [2021-12-17 04:01:59,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:23" (2/3) ... [2021-12-17 04:01:59,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204c6735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:01:59, skipping insertion in model container [2021-12-17 04:01:59,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:01:59" (3/3) ... [2021-12-17 04:01:59,759 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem07_label42.c [2021-12-17 04:01:59,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 04:01:59,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 04:01:59,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 04:01:59,979 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-12-17 04:01:59,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 04:02:00,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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) [2021-12-17 04:02:00,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10098 [2021-12-17 04:02:00,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:02:00,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:02:00,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:02:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:02:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1291161481, now seen corresponding path program 1 times [2021-12-17 04:02:00,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:02:00,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567179515] [2021-12-17 04:02:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:02:00,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:02:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:02:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:02:20,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:02:20,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567179515] [2021-12-17 04:02:20,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567179515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:02:20,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:02:20,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:02:20,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773026509] [2021-12-17 04:02:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:02:20,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:02:20,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:02:20,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:02:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:02:20,485 INFO L87 Difference]: Start difference. First operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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) Second operand has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 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) [2021-12-17 04:02:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:02:53,009 INFO L93 Difference]: Finished difference Result 30705 states and 61134 transitions. [2021-12-17 04:02:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:02:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 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) Word has length 10097 [2021-12-17 04:02:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:02:53,137 INFO L225 Difference]: With dead ends: 30705 [2021-12-17 04:02:53,137 INFO L226 Difference]: Without dead ends: 20384 [2021-12-17 04:02:53,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:02:53,162 INFO L933 BasicCegarLoop]: 3749 mSDtfsCounter, 1316 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29786 mSolverCounterSat, 14106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 43892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14106 IncrementalHoareTripleChecker+Valid, 29786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:02:53,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 3802 Invalid, 43892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14106 Valid, 29786 Invalid, 0 Unknown, 0 Unchecked, 31.7s Time] [2021-12-17 04:02:53,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20384 states. [2021-12-17 04:02:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384. [2021-12-17 04:02:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20384 states, 20383 states have (on average 1.80954717166266) internal successors, (36884), 20383 states have internal predecessors, (36884), 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) [2021-12-17 04:02:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36884 transitions. [2021-12-17 04:02:53,682 INFO L78 Accepts]: Start accepts. Automaton has 20384 states and 36884 transitions. Word has length 10097 [2021-12-17 04:02:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:02:53,699 INFO L470 AbstractCegarLoop]: Abstraction has 20384 states and 36884 transitions. [2021-12-17 04:02:53,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 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) [2021-12-17 04:02:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 20384 states and 36884 transitions. [2021-12-17 04:02:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10105 [2021-12-17 04:02:54,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:02:54,361 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:02:54,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 04:02:54,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:02:54,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:02:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 460183910, now seen corresponding path program 1 times [2021-12-17 04:02:54,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:02:54,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833906744] [2021-12-17 04:02:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:02:54,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:02:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat