./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/seq-pthread/cs_fib_longer-2.i -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 583ab92a7056287b3071cc8588dd414024160b1da2815b90013f83f6f32564a1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:19:41,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:19:41,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:19:41,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:19:41,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:19:41,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:19:41,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:19:41,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:19:41,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:19:41,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:19:41,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:19:41,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:19:41,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:19:41,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:19:41,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:19:41,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:19:41,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:19:41,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:19:41,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:19:41,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:19:41,633 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:19:41,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:19:41,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:19:41,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:19:41,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:19:41,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:19:41,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:19:41,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:19:41,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:19:41,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:19:41,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:19:41,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:19:41,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:19:41,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:19:41,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:19:41,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:19:41,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:19:41,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:19:41,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:19:41,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:19:41,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:19:41,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:19:41,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:19:41,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:19:41,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:19:41,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:19:41,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:19:41,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:19:41,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:19:41,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:19:41,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:19:41,698 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:19:41,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:19:41,699 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:19:41,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:19:41,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:19:41,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:19:41,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:19:41,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:19:41,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:19:41,701 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:19:41,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:19:41,701 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:19:41,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:19:41,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:19:41,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:19:41,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:19:41,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:19:41,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:19:41,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:19:41,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:19:41,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:19:41,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:19:41,703 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:19:41,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:19:41,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:19:41,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 583ab92a7056287b3071cc8588dd414024160b1da2815b90013f83f6f32564a1 [2022-07-21 06:19:42,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:19:42,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:19:42,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:19:42,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:19:42,052 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:19:42,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i [2022-07-21 06:19:42,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31333272d/0fb55aa8c94c41f8bfb9ffc6c600187c/FLAG2fd449843 [2022-07-21 06:19:42,899 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:19:42,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i [2022-07-21 06:19:42,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31333272d/0fb55aa8c94c41f8bfb9ffc6c600187c/FLAG2fd449843 [2022-07-21 06:19:43,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31333272d/0fb55aa8c94c41f8bfb9ffc6c600187c [2022-07-21 06:19:43,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:19:43,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:19:43,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:19:43,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:19:43,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:19:43,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:19:43" (1/1) ... [2022-07-21 06:19:43,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241534e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:43, skipping insertion in model container [2022-07-21 06:19:43,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:19:43" (1/1) ... [2022-07-21 06:19:43,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:19:43,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:19:43,721 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/seq-pthread/cs_fib_longer-2.i[23464,23477] [2022-07-21 06:19:43,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:19:43,913 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:19:43,959 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/seq-pthread/cs_fib_longer-2.i[23464,23477] [2022-07-21 06:19:44,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:19:44,144 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:19:44,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44 WrapperNode [2022-07-21 06:19:44,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:19:44,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:19:44,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:19:44,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:19:44,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,334 INFO L137 Inliner]: procedures = 144, calls = 393, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 730 [2022-07-21 06:19:44,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:19:44,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:19:44,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:19:44,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:19:44,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:19:44,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:19:44,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:19:44,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:19:44,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (1/1) ... [2022-07-21 06:19:44,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:19:44,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:19:44,477 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) [2022-07-21 06:19:44,500 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 [2022-07-21 06:19:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 06:19:44,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 06:19:44,517 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 06:19:44,517 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 06:19:44,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:19:44,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 06:19:44,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 06:19:44,518 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-07-21 06:19:44,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-07-21 06:19:44,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 06:19:44,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-21 06:19:44,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-21 06:19:44,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 06:19:44,519 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-07-21 06:19:44,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-07-21 06:19:44,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:19:44,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:19:44,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:19:44,799 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:19:44,802 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:19:45,155 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2022-07-21 06:19:45,156 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:19:45,156 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2022-07-21 06:19:45,157 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:19:45,157 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: SUMMARY for call __CS_cs(); srcloc: null [2022-07-21 06:19:45,157 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-1: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2022-07-21 06:19:45,157 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-1: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:19:49,134 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:19:49,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:19:49,145 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 06:19:49,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:19:49 BoogieIcfgContainer [2022-07-21 06:19:49,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:19:49,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:19:49,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:19:49,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:19:49,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:19:43" (1/3) ... [2022-07-21 06:19:49,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147dba53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:19:49, skipping insertion in model container [2022-07-21 06:19:49,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:19:44" (2/3) ... [2022-07-21 06:19:49,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147dba53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:19:49, skipping insertion in model container [2022-07-21 06:19:49,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:19:49" (3/3) ... [2022-07-21 06:19:49,163 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_fib_longer-2.i [2022-07-21 06:19:49,177 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:19:49,178 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 06:19:49,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:19:49,278 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@62f333fa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f943872 [2022-07-21 06:19:49,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 06:19:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 117 states have internal predecessors, (154), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-07-21 06:19:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-21 06:19:49,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:19:49,329 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:19:49,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:19:49,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:19:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash -951370211, now seen corresponding path program 1 times [2022-07-21 06:19:49,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:19:49,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226212808] [2022-07-21 06:19:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:19:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms