./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem09_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/Problem09_label07.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 f96df3fdd872e06bb4f60683cab8d398760ff9002057466c3a2affe810837d9a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 11:53:55,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:53:55,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:53:55,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:53:55,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:53:55,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:53:55,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:53:55,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:53:55,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:53:55,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:53:55,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:53:55,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:53:55,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:53:55,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:53:55,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:53:55,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:53:55,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:53:55,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:53:55,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:53:55,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:53:55,101 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:53:55,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:53:55,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:53:55,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:53:55,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:53:55,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:53:55,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:53:55,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:53:55,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:53:55,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:53:55,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:53:55,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:53:55,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:53:55,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:53:55,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:53:55,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:53:55,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:53:55,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:53:55,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:53:55,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:53:55,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:53:55,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:53:55,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:53:55,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:53:55,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:53:55,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:53:55,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:53:55,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:53:55,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:53:55,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:53:55,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:53:55,141 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:53:55,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:53:55,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:53:55,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:53:55,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:53:55,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:53:55,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:53:55,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:53:55,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:53:55,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:53:55,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:53:55,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:53:55,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:53:55,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:53:55,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:53:55,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:53:55,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:53:55,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:53:55,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:53:55,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:53:55,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:53:55,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:53:55,145 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:53:55,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:53:55,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:53:55,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f96df3fdd872e06bb4f60683cab8d398760ff9002057466c3a2affe810837d9a [2022-07-19 11:53:55,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:53:55,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:53:55,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:53:55,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:53:55,325 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:53:55,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem09_label07.c [2022-07-19 11:53:55,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dff84af/321820a40e0243ce89cc418832eeae50/FLAG3e1ca290f [2022-07-19 11:53:57,507 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:53:57,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem09_label07.c [2022-07-19 11:53:57,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dff84af/321820a40e0243ce89cc418832eeae50/FLAG3e1ca290f [2022-07-19 11:53:57,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dff84af/321820a40e0243ce89cc418832eeae50 [2022-07-19 11:53:57,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:53:57,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:53:57,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:53:57,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:53:57,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:53:57,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:53:57" (1/1) ... [2022-07-19 11:53:57,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e94db7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:53:57, skipping insertion in model container [2022-07-19 11:53:57,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:53:57" (1/1) ... [2022-07-19 11:53:57,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:53:58,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:54:15,538 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/Problem09_label07.c[6307979,6307992] [2022-07-19 11:54:15,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:54:15,635 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:54:24,143 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/Problem09_label07.c[6307979,6307992] [2022-07-19 11:54:24,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:54:27,335 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:54:27,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27 WrapperNode [2022-07-19 11:54:27,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:54:27,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:54:27,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:54:27,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:54:27,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:28,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:31,601 INFO L137 Inliner]: procedures = 88, calls = 82, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 197818 [2022-07-19 11:54:31,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:54:31,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:54:31,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:54:31,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:54:31,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:31,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:32,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:32,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:34,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:34,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:34,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:35,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:54:35,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:54:35,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:54:35,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:54:35,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (1/1) ... [2022-07-19 11:54:35,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:54:35,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:54:35,355 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) [2022-07-19 11:54:35,362 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 [2022-07-19 11:54:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:54:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:54:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:54:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:54:35,570 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:54:35,571 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:55:30,585 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:55:30,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:55:30,642 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:55:30,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:55:30 BoogieIcfgContainer [2022-07-19 11:55:30,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:55:30,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:55:30,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:55:30,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:55:30,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:53:57" (1/3) ... [2022-07-19 11:55:30,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fb5e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:55:30, skipping insertion in model container [2022-07-19 11:55:30,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:54:27" (2/3) ... [2022-07-19 11:55:30,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fb5e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:55:30, skipping insertion in model container [2022-07-19 11:55:30,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:55:30" (3/3) ... [2022-07-19 11:55:30,666 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem09_label07.c [2022-07-19 11:55:30,675 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:55:30,676 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:55:30,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:55:30,877 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@573583eb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71a75bf6 [2022-07-19 11:55:30,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:55:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 20356 states, 20354 states have (on average 1.902525302151911) internal successors, (38724), 20355 states have internal predecessors, (38724), 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) [2022-07-19 11:55:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16518 [2022-07-19 11:55:32,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:55:32,501 INFO L195 NwaCegarLoop]: 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, 1, 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PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:55:32,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1640113659, now seen corresponding path program 1 times [2022-07-19 11:55:32,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:55:32,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665401277] [2022-07-19 11:55:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:55:32,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms